{"product_id":"sierra-marine-v-belt-18-15520-power-steering","title":"Sierra Marine Power Steering V-Belt 18-15520 | 52 in. \/ 132.1 cm × 29\/64 in. \/ 11.5 mm","description":"\u003ch2\u003eSierra Marine Power Steering V-Belt 18-15520\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 18-15520 (Sierra)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Marine V-Belt — Power Steering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffective Length:\u003c\/strong\u003e 52 in. \/ 132.1 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Width:\u003c\/strong\u003e 29\/64 in. \/ 11.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999566690\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe Sierra 18-15520 is a marine V-belt primarily used as a power-steering drive belt on selected MerCruiser and OMC inboard and sterndrive engines. High-strength synthetic cords resist stretching and shock loading. Rubber sidewalls maintain positive, non-slip pulley contact, and the construction is suited to the continuous-duty demands of a marine power-steering circuit.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003eVerified MerCruiser applications with high-mounted power-steering pump configurations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser 230 \/ 5.0L MIE — selected 1981–1987\u003c\/li\u003e\n\u003cli\u003eMerCruiser 230 \/ 5.0L — selected 1983–1987\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L — selected 1988–1995\u003c\/li\u003e\n\u003cli\u003eOMC sterndrive applications specifying OEM belt 912714 \/ 0912714\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways confirm engine model, serial number, existing OEM belt number, power-steering pump location, and pulley configuration before ordering. Engines of the same displacement may use different belt lengths depending on the power-steering pump position, alternator, and production year. This belt should not be selected by engine displacement alone.\u003c\/p\u003e\n\n\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra:\u003c\/strong\u003e 18-15520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier\/Catalogue Reference:\u003c\/strong\u003e 47-15520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ MerCruiser:\u003c\/strong\u003e 57-33170\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury Quicksilver:\u003c\/strong\u003e 57-33170Q\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ MerCruiser:\u003c\/strong\u003e 57-34359\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ MerCruiser:\u003c\/strong\u003e 57-37619\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury Quicksilver:\u003c\/strong\u003e 57-37619Q\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ MerCruiser:\u003c\/strong\u003e 57-37619T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC:\u003c\/strong\u003e 912714 \/ 0912714\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC:\u003c\/strong\u003e 0509287\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC:\u003c\/strong\u003e 0509288\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC:\u003c\/strong\u003e 0909818\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMallory:\u003c\/strong\u003e 9-55001\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace This Belt\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCracks visible along the belt body\u003c\/li\u003e\n\u003cli\u003eFrayed or worn edges\u003c\/li\u003e\n\u003cli\u003eGlazed, hardened, or oil-contaminated surface\u003c\/li\u003e\n\u003cli\u003ePower-steering belt squeal at start-up or under load\u003c\/li\u003e\n\u003cli\u003eSlipping or loss of tension\u003c\/li\u003e\n\u003cli\u003eBelt has stretched beyond adjustment range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the power-steering pulley and all accessory pulleys for wear, corrosion, and alignment\u003c\/li\u003e\n\u003cli\u003eCheck adjustment hardware and bracket condition\u003c\/li\u003e\n\u003cli\u003eConfirm correct belt routing before fitting\u003c\/li\u003e\n\u003cli\u003eDo not force the belt over pulley flanges with sharp tools\u003c\/li\u003e\n\u003cli\u003eSet belt tension to the engine manufacturer’s specification\u003c\/li\u003e\n\u003cli\u003eRotate the system by hand to confirm full pulley seating\u003c\/li\u003e\n\u003cli\u003eRecheck tension after initial operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This is the go-to replacement for pre-season service on MerCruiser 305 and 350 V8 boats with a high-mounted power-steering pump. If your engine specifies OEM references 57-33170, 57-37619, or OMC 912714, this is the direct replacement. It also makes a sensible onboard spare — a belt failure on this circuit can take out power steering, raw water cooling, and battery charging at the same time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issue:\u003c\/strong\u003e This belt is tied to a specific power-steering pump location and pulley layout, not just an engine size. Customers frequently order by displacement and end up with a belt that is the right length but wrong for their accessory arrangement. Always verify the OEM belt number and power-steering pump position before ordering. If your engine has been retrofitted with a different pump location or converted to a serpentine drive, this belt may not apply.\u003c\/p\u003e\n\u003cp\u003eFor a complete cooling system service, pair this belt with a raw water pump impeller. See the \u003ca href=\"\/products\/8131470458916\"\u003ePCM Impeller Kit RP061017\u003c\/a\u003e and \u003ca href=\"\/products\/8131470491684\"\u003ePCM \/ Crusader RP061022 Raw Water Pump Impeller\u003c\/a\u003e for compatible options.\u003c\/p\u003e\n\u003cp\u003eNeed a different belt size? Browse other sizes in the Sierra V-Belt series: \u003ca href=\"\/products\/11077659328548\"\u003eSierra V-Belt 47-15400\u003c\/a\u003e, \u003ca href=\"\/products\/11077659361316\"\u003eSierra V-Belt 47-15410\u003c\/a\u003e, \u003ca href=\"\/products\/11077659426852\"\u003eSierra V-Belt 47-15440\u003c\/a\u003e, \u003ca href=\"\/products\/11077659459620\"\u003eSierra V-Belt 47-15450\u003c\/a\u003e, \u003ca href=\"\/products\/11077659492388\"\u003eSierra V-Belt 47-15455\u003c\/a\u003e, \u003ca href=\"\/products\/11077659557924\"\u003eSierra V-Belt 47-15460\u003c\/a\u003e, \u003ca href=\"\/products\/11077659590692\"\u003eSierra Marine V-Belt 18-15470\u003c\/a\u003e, \u003ca href=\"\/products\/11077659623460\"\u003eSierra Marine V-Belt 18-15480\u003c\/a\u003e, and \u003ca href=\"\/products\/11077659721764\"\u003eSierra V-Belt 47-15550\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eShop all \u003ca href=\"\/collections\/engine-parts-maintenance\"\u003eEngine Parts \u0026amp; Maintenance\u003c\/a\u003e or browse \u003ca href=\"\/collections\/propulsion-powertrain\"\u003ePropulsion \u0026amp; Powertrain\u003c\/a\u003e for related components.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51037541302308,"sku":"47-15520","price":60.29,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-15128_3195b7ff-d4fd-46d9-8570-477d52f439d8.jpg?v=1783568594","url":"https:\/\/marisolmarine.com\/products\/sierra-marine-v-belt-18-15520-power-steering","provider":"Marisol Marine Company","version":"1.0","type":"link"}