{"title":"XL Timing Belt Pulleys","description":"\u003c!--\n  TotallyBelts – XL Timing Belt Pulleys collection description\n  Shopify: Products \u003e Collections \u003e XL Timing Belt Pulleys \u003e Description \u003e \"Show HTML\" (\u003c\u003e) button, replace everything.\n  SEO page title: XL Timing Belt Pulleys | 5.08mm Pitch | TotallyBelts\n  SEO meta description: XL timing belt pulleys, 5.08mm pitch, from Dunlop \/ Optibelt in a range of sizes. Search by code such as 12XL037F(PB). 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font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"tb-coll\"\u003e\n  \u003cdiv class=\"tb-coll-head\"\u003e\n    \u003cspan class=\"tb-coll-tag\"\u003e\u003cspan\u003ePulley\u003c\/span\u003e XL timing pulleys\u003c\/span\u003e\n    \u003cp\u003e5.08mm pitch · Trapezoidal, imperial · Dunlop \/ Optibelt\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"tb-coll-lede\"\u003e\n    XL timing pulleys are toothed pulleys for 5.08mm pitch imperial XL timing belts, with the classic trapezoidal tooth. We stock Dunlop \/ Optibelt pulleys in a range of tooth counts and widths. Search by the pulley code, such as 12XL037F(PB), and use the filters to narrow it down by teeth or width.\n  \u003c\/p\u003e\n\n  \u003cul class=\"tb-coll-models tb-coll-models--5\" aria-label=\"XL timing pulleys at a glance\"\u003e\n    \u003cli\u003e\n\u003cb\u003ePitch\u003c\/b\u003e\u003cspan\u003e5.08mm\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eTooth\u003c\/b\u003e\u003cspan\u003eTrapezoidal, imperial\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eExample\u003c\/b\u003e\u003cspan\u003e12XL037F(PB)\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eBore\u003c\/b\u003e\u003cspan\u003ePilot bore or taper lock\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eBrand\u003c\/b\u003e\u003cspan\u003eDunlop \/ Optibelt\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"tb-coll-feature\"\u003e\n    \u003ch3\u003eFinding the right XL pulley\u003c\/h3\u003e\n    \u003cdiv class=\"tb-coll-split tb-coll-split--3\"\u003e\n      \u003cp\u003e\u003cstrong\u003eReading the code\u003c\/strong\u003e12XL037F(PB) is 12 teeth, XL profile, for a 3\/8″ (037) wide belt, flanged (F), pilot bore (PB).\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eSize and speed\u003c\/strong\u003eThe number of teeth sets the pulley size and the speed ratio. Count the teeth on the old pulley and match the width to your belt.\u003c\/p\u003e\n      \u003cp\u003e\u003cstrong\u003eImperial or metric?\u003c\/strong\u003eXL pulleys only suit imperial XL belts. Metric belts with a similar pitch won’t mesh properly, so match the pulley to the code on the belt.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cp class=\"tb-coll-codes\"\u003e\u003cspan\u003e\u003cb\u003eTip:\u003c\/b\u003e For the belt, see our \u003ca href=\"\/collections\/xl-5-08mm-pitch\"\u003eXL timing belts\u003c\/a\u003e. Taper lock pulleys show the bush size in brackets; choose a \u003ca href=\"\/collections\/metric-taper-lock-bushes-copy\"\u003eimperial taper lock bush\u003c\/a\u003e in that size with a bore to fit your shaft.\u003c\/span\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cul class=\"tb-coll-help tb-coll-help--4\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNot sure of the size?\u003c\/strong\u003eOur \u003ca href=\"\/pages\/measuring-your-belt\"\u003ehow to measure guide\u003c\/a\u003e shows you how to identify the belt section the pulley runs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOther pulleys\u003c\/strong\u003eTry \u003ca href=\"\/collections\/h-timing-belt-pulleys-copy\"\u003eL\u003c\/a\u003e, \u003ca href=\"\/collections\/xl-timing-belt-pulleys-copy\"\u003eH\u003c\/a\u003e or \u003ca href=\"\/collections\/l-timing-belt-pulleys-copy\"\u003eXH\u003c\/a\u003e imperial timing pulleys.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStill not sure?\u003c\/strong\u003eCall \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e with the pulley code, belt section or shaft size and we'll find the right part.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuying for a business?\u003c\/strong\u003e\u003ca href=\"\/pages\/apply-for-credit-account\"\u003eOpen a trade account\u003c\/a\u003e for trade pricing on maintenance stock and repeat orders.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","products":[{"product_id":"10xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"10XL037F A XL Pilot Bore Timing Pulley - 10 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 10XL037F A is a flanged XL timing belt pulley with 10 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e10XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e16.17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 15.7mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e10 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 10.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest size is \u003ca href=\"\/products\/11xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e11XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385423523937,"sku":"TB00039509","price":3.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"10xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"10XL037F C XL Pilot Bore Timing Pulley - 10 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 10XL037F C is a flanged XL timing belt pulley with 10 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e10XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e16.17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 15.7mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e10 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 10.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest size is \u003ca href=\"\/products\/11xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e11XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385423556705,"sku":"TB00039508","price":12.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"11xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"11XL037F A XL Pilot Bore Timing Pulley - 11 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 11XL037F A is a flanged XL timing belt pulley with 11 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e11XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e17.79mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 17.3mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e11 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 11.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/10xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e10XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/12xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e12XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385425719393,"sku":"TB00039485","price":3.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"11xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"11XL037F C XL Pilot Bore Timing Pulley - 11 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 11XL037F C is a flanged XL timing belt pulley with 11 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e11XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e17.79mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 17.3mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e11 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 11.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/10xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e10XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/12xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e12XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385425752161,"sku":"TB00039484","price":3.62,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"12xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"12XL037F A XL Pilot Bore Timing Pulley - 12 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 12XL037F A is a flanged XL timing belt pulley with 12 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e12XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e19.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 18.9mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e12 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 12.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/11xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e11XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/13xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e13XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385427521633,"sku":"TB00039446","price":4.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"12xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"12XL037F C XL Pilot Bore Timing Pulley - 12 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 12XL037F C is a flanged XL timing belt pulley with 12 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e12XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e19.40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 18.9mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e12 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 12.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/11xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e11XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/13xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e13XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385427554401,"sku":"TB00039445","price":3.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"13xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"13XL037F A XL Pilot Bore Timing Pulley - 13 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 13XL037F A is a flanged XL timing belt pulley with 13 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e13XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e21.02mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 20.5mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e13 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 13.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/12xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e12XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/14xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e14XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385428635745,"sku":"TB00039441","price":4.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"13xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"13XL037F C XL Pilot Bore Timing Pulley - 13 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 13XL037F C is a flanged XL timing belt pulley with 13 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e13XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e21.02mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 20.5mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e13 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 13.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/12xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e12XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/14xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e14XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385428668513,"sku":"TB00039440","price":4.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"14xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"14XL037F A XL Pilot Bore Timing Pulley - 14 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 14XL037F A is a flanged XL timing belt pulley with 14 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e14XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e22.64mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 22.1mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e14 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 14.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/13xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e13XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/15xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e15XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385431158881,"sku":"TB00039392","price":4.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"14xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"14XL037F C XL Pilot Bore Timing Pulley - 14 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 14XL037F C is a flanged XL timing belt pulley with 14 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e14XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e22.64mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 22.1mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e14 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 14.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/13xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e13XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/15xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e15XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385431191649,"sku":"TB00039391","price":4.06,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"15xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"15XL037F A XL Pilot Bore Timing Pulley - 15 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 15XL037F A is a flanged XL timing belt pulley with 15 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e15XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e24.26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 23.7mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e15 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 15.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/14xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e14XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/16xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e16XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385432207457,"sku":"TB00039364","price":4.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"15xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"15XL037F C XL Pilot Bore Timing Pulley - 15 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 15XL037F C is a flanged XL timing belt pulley with 15 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e15XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e24.26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 23.7mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e15 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 15.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/14xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e14XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/16xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e16XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385432240225,"sku":"TB00039363","price":4.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"16xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"16XL037F A XL Pilot Bore Timing Pulley - 16 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 16XL037F A is a flanged XL timing belt pulley with 16 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e16XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e25.87mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 25.4mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e16 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 16.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/15xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e15XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/17xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e17XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385435123809,"sku":"TB00039279","price":5.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"16xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"16XL037F C XL Pilot Bore Timing Pulley - 16 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 16XL037F C is a flanged XL timing belt pulley with 16 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e16XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e25.87mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 25.4mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e16 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 16.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/15xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e15XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/17xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e17XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385435156577,"sku":"TB00039278","price":4.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"17xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"17XL037F A XL Pilot Bore Timing Pulley - 17 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 17XL037F A is a flanged XL timing belt pulley with 17 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e17XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e27.49mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 27.0mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e17 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 17.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/16xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e16XL037F A\u003c\/a\u003e and \u003ca href=\"\/products\/18xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e18XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385435975777,"sku":"TB00039260","price":5.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"17xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"17XL037F C XL Pilot Bore Timing Pulley - 17 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 17XL037F C is a flanged XL timing belt pulley with 17 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e17XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e27.49mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 27.0mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e17 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 17.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest sizes are \u003ca href=\"\/products\/16xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e16XL037F C\u003c\/a\u003e and \u003ca href=\"\/products\/18xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e18XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385436008545,"sku":"TB00039259","price":4.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"18xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"18XL037F A XL Pilot Bore Timing Pulley - 18 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 18XL037F A is a flanged XL timing belt pulley with 18 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e18XL037F A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e29.11mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 28.6mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e18 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 18.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest size is \u003ca href=\"\/products\/17xl037fpba-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e17XL037F A\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385437286497,"sku":"TB00039225","price":5.47,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"},{"product_id":"18xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley","title":"18XL037F C XL Pilot Bore Timing Pulley - 18 Teeth, 3\/8in","description":"\u003cstyle\u003e .tb-prod { --tb-navy: #373e71; --tb-orange: #c46e3a; --tb-ink: #22264a; --tb-muted: #5b6080; --tb-rule: #e3e4ea; color: var(--tb-ink); line-height: 1.6; } .tb-prod, .tb-prod * { box-sizing: border-box; text-align: left !important; } .tb-prod p { margin: 0 0 1em !important; } .tb-prod h3 { color: var(--tb-navy); font-size: 1.05em; margin: 1.4em 0 0.5em !important; } .tb-prod table { width: 100%; border-collapse: collapse; margin: 0 0 1em !important; font-size: 0.95em; } .tb-prod th, .tb-prod td { padding: 0.5em 0.75em; border-bottom: 1px solid var(--tb-rule); } .tb-prod th { width: 42%; color: var(--tb-navy); font-weight: 600; background: #f3f3f6; } .tb-prod ul { margin: 0 0 1em !important; padding-left: 1.2em !important; } .tb-prod li { margin: 0 0 0.35em !important; } .tb-prod .tb-prod-note { border-left: 4px solid var(--tb-orange); background: #f3f3f6; border-radius: 8px; padding: 0.9em 1.1em; font-size: 0.95em; } .tb-prod .tb-prod-note p { margin: 0 !important; } .tb-prod a { color: var(--tb-navy); font-weight: 700; text-decoration-color: var(--tb-orange); text-underline-offset: 3px; } \u003c\/style\u003e \u003cdiv class=\"tb-prod\"\u003e\n\u003cp\u003eThe 18XL037F C is a flanged XL timing belt pulley with 18 teeth at a 5.08mm pitch, for 3\/8″ (9.5mm) wide XL belts (width code 037).\u003c\/p\u003e \u003cp\u003eIt has a \u003cstrong\u003epilot bore\u003c\/strong\u003e: a small starter hole that you, or your machine shop, bore out to your shaft size and keyway.\u003c\/p\u003e \u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e \u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e18XL037F C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eXL (5.08mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of teeth\u003c\/th\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003ePitch diameter\u003c\/th\u003e\n\u003ctd\u003e29.11mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside diameter\u003c\/th\u003e\n\u003ctd\u003eabout 28.6mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003cth\u003eBelt width\u003c\/th\u003e\n\u003ctd\u003e3\/8″ (9.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlanges\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003ctd\u003ePilot bore, to be bored to size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e \u003ch3\u003eCheck it’s the right pulley\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e18 is the number of teeth, XL the profile and 037 the belt width in hundredths of an inch, F means flanged.\u003c\/li\u003e \u003cli\u003eCount the teeth on the old pulley: this one has 18.\u003c\/li\u003e \u003cli\u003eThe profile has to match your belt exactly. XL won’t mesh with other profiles, even ones with a similar pitch.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv class=\"tb-prod-note\"\u003e\u003cp\u003e\u003cstrong\u003eNot quite the right size?\u003c\/strong\u003e The nearest size is \u003ca href=\"\/products\/17xl037fpbc-dunlop-optibelt-timing-belt-pilot-bore-pulley\"\u003e17XL037F C\u003c\/a\u003e. Not sure? Call \u003ca href=\"tel:+442081382848\"\u003e020 8138 2848\u003c\/a\u003e and we’ll help you find the right pulley.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotallyBelts","offers":[{"title":"Default Title","offer_id":12385437319265,"sku":"TB00039224","price":5.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2473\/6104\/files\/PIlot_Bore_Timing_Belt_Pulley.webp?v=1791956543"}],"url":"https:\/\/www.totallybelts.com\/collections\/at2-5-timing-belt-pulleys-copy.oembed","provider":"Totally Belts","version":"1.0","type":"link"}