{"product_id":"volvo-793","title":"Volvo Penta Idler Pulley 3860201","description":"\u003cp\u003eVolvo Penta 3860201 is a genuine OEM idler pulley used in Volvo Penta gasoline-engine front-end belt-drive service. Current public parts references consistently identify it as an \u003cstrong\u003eidler pulley\u003c\/strong\u003e, and the strongest application trail places it in the \u003cstrong\u003eserpentine belt and alternator\u003c\/strong\u003e assembly. Broader current fitment references tie this pulley to Volvo Penta \u003cstrong\u003e4.3L, 5.0L, 5.7L, and 8.1L\u003c\/strong\u003e gasoline families, making it the correct replacement where part number 3860201 is specified in the accessory-belt system.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Volvo Penta OEM idler pulley, part number \u003cstrong\u003e3860201\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eStrongest current public application trail places it in the \u003cstrong\u003eserpentine belt and alternator\u003c\/strong\u003e assembly.\u003c\/li\u003e\n\u003cli\u003eCurrent public fitment references associate it with Volvo Penta gasoline engines in the \u003cstrong\u003e4.3L, 5.0L, 5.7L, and 8.1L\u003c\/strong\u003e families.\u003c\/li\u003e\n\u003cli\u003eCurrent public cross-reference listings also associate it with \u003cstrong\u003eMerCruiser 807757T\u003c\/strong\u003e, \u003cstrong\u003eSierra 18-6457\u003c\/strong\u003e, and \u003cstrong\u003eREC807757T\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eOne current product listing shows approximate weight around \u003cstrong\u003e0.44 lb\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe strongest supportable fitment trail for Volvo Penta 3860201 is with Volvo Penta gasoline-engine accessory-belt systems. Current public fitment references associate it with a broad group of gasoline applications, including many \u003cstrong\u003e4.3Gi \/ GXi \/ OSi\u003c\/strong\u003e, \u003cstrong\u003e5.0Gi \/ GXi \/ OSi\u003c\/strong\u003e, \u003cstrong\u003e5.7Gi \/ GXi \/ OSi \/ OSXi\u003c\/strong\u003e, and \u003cstrong\u003e8.1Gi \/ GSi \/ GXi\u003c\/strong\u003e variants. Because accessory-drive layouts can vary by engine version and front-end configuration, the safest fitment standard is the exact Volvo Penta serial-number-based parts diagram for the engine being serviced.\u003c\/p\u003e\n\u003ch2\u003eSerial Number Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eFitment can vary by engine family, serpentine-belt layout, and serial-number range. Confirm Volvo Penta part number \u003cstrong\u003e3860201\u003c\/strong\u003e against your engine serial number and the correct Volvo Penta alternator \/ belt-drive diagram before ordering, especially on gasoline engines where nearby pulleys and belt-drive hardware can look similar once removed.\u003c\/p\u003e\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cp\u003eReplace this idler pulley when the original pulley shows bearing noise, wobble, rough rotation, belt-tracking issues, visible wear, or damage to the pulley surface. It is also a smart replacement during adjacent serpentine-belt or alternator service if the pulley feels rough by hand or if a failed belt has already stressed the accessory-drive system.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eMatch this pulley to the exact Volvo Penta application before installation. The strongest public references tie it to the \u003cstrong\u003eserpentine belt and alternator\u003c\/strong\u003e assembly, so confirming both the part number and the exact diagram position is the safest cross-check before ordering or reassembly. Inspect the belt, tensioner, and adjacent pulleys at the same time to help avoid repeat belt-drive issues after service.\u003c\/p\u003e\n\u003ch2\u003eAlternate\/Superseded Part Numbers\u003c\/h2\u003e\n\u003cp\u003eCurrent public cross-reference sources associate Volvo Penta \u003cstrong\u003e3860201\u003c\/strong\u003e with \u003cstrong\u003eMerCruiser 807757T\u003c\/strong\u003e, \u003cstrong\u003eSierra 18-6457\u003c\/strong\u003e, and \u003cstrong\u003eREC807757T\u003c\/strong\u003e in the same pulley family. Use \u003cstrong\u003e3860201\u003c\/strong\u003e as the primary Volvo Penta ordering number for this listing.\u003c\/p\u003e\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eIdler pulleys are easy to overlook during belt service because they often fail quietly before they fail completely. Matching the exact Volvo Penta belt-drive diagram first is usually much safer than comparing pulley size by eye alone, especially on gasoline front-end accessory layouts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43564033703972,"sku":"3860201","price":44.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/8dea481e-8af6-4e85-b4f5-0603616d78de.png?v=1776449536","url":"https:\/\/marisolmarine.com\/products\/volvo-793","provider":"Marisol Marine Company","version":"1.0","type":"link"}