{"product_id":"merc-1261","title":"Mercury MerCruiser Serpentine Belt \u0026 Pulley Kit – 8M0150824","description":"\u003ch2\u003eMercury MerCruiser Serpentine Belt \u0026amp; Pulley Kit – 8M0150824\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0150824\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver\u003cbr\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Serpentine Belt \u0026amp; Pulley Kit (BELT\/PULLEY KIT) – OEM\u003cbr\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Accessory Belt Drive\u003cbr\u003e\n\u003cstrong\u003eDrive Type:\u003c\/strong\u003e Serpentine belt system\u003c\/p\u003e\n\n\u003ch3\u003eAbout This Kit\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine Mercury OEM serpentine belt and pulley kit for MerCruiser sterndrive engines. The serpentine belt drive system powers all engine-mounted accessories from a single belt — including the seawater pump, power steering pump, alternator, and other driven components. This kit consolidates the belt and associated pulley components into a single OEM part number, making it the correct choice for a complete accessory drive service or when replacing multiple worn belt drive components at once. Buying the kit is more economical than sourcing the belt and pulleys individually and ensures all components are matched to the same OEM specification.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser 4.3L V6 – serpentine belt accessory drive models\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L V8 – serpentine belt accessory drive models\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.7L V8 – serpentine belt accessory drive models\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6.2L V8 – serpentine belt accessory drive models\u003c\/li\u003e\n\u003cli\u003eMerCruiser 7.4L V8 – serpentine belt accessory drive models\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L V8 – serpentine belt accessory drive models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAlways verify fitment using your engine serial number. MerCruiser engines of the same displacement can use different accessory drive configurations depending on model year and production serial range. Confirm part number 8M0150824 appears on the Mercury MerCruiser parts diagram for your engine before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSerial Number \/ Fitment Note\u003c\/h3\u003e\n\u003cp\u003eLocate your MerCruiser engine serial number on the engine block tag or flame arrestor decal. Cross-reference against the Mercury MerCruiser parts diagram for your engine model to confirm this is the correct belt and pulley kit. Some MerCruiser engines use a V-belt accessory drive rather than a serpentine belt — this kit is for serpentine belt systems only.\u003c\/p\u003e\n\n\u003ch3\u003eSystem \u0026amp; Diagram Position\u003c\/h3\u003e\n\u003cp\u003eThis kit is found in the \u003cstrong\u003eAccessory Belt Drive\u003c\/strong\u003e section of the Mercury MerCruiser parts diagram. The serpentine belt routes around all accessory pulleys — seawater pump, power steering pump, alternator, tensioner, and idler — in a single continuous loop. Correct belt tension and pulley alignment across the entire system is critical for reliable operation of all belt-driven accessories.\u003c\/p\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cp\u003eIncludes the OEM serpentine belt and associated pulley component(s) as packaged by Mercury Marine for part number 8M0150824. Confirm exact kit contents against the Mercury parts diagram for your engine model before beginning service. Individual components are also available separately if only one item requires replacement.\u003c\/p\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eInspect the serpentine belt and all pulleys annually or every 100 hours, whichever comes first. Replace the belt at the first sign of cracking, glazing, rib loss, or fraying. Pulleys should be replaced when grooves are worn smooth, when wobble or runout is detected, or whenever the belt has been running on a damaged pulley surface. A complete belt and pulley service is recommended at the 300-hour major service interval.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBelt cracking, glazing, missing ribs, or fraying\u003c\/li\u003e\n\u003cli\u003eBelt squeal or chirp that persists after tension adjustment\u003c\/li\u003e\n\u003cli\u003ePulley grooves worn smooth — causes belt slip and accelerated belt wear\u003c\/li\u003e\n\u003cli\u003ePulley wobble or runout detected when spun by hand\u003c\/li\u003e\n\u003cli\u003eBelt misalignment across the accessory drive\u003c\/li\u003e\n\u003cli\u003eAny overheating event traced to reduced seawater pump speed from belt slippage\u003c\/li\u003e\n\u003cli\u003eScheduled 300-hour major service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA pulley puller and installer tool is required for any pulley replacement — do not hammer pulleys on or off the shaft\u003c\/li\u003e\n\u003cli\u003eConfirm alignment of all pulleys using a straightedge before installing the new belt\u003c\/li\u003e\n\u003cli\u003eCheck and set belt tension per the Mercury MerCruiser service manual specification\u003c\/li\u003e\n\u003cli\u003eInspect the tensioner and idler pulley bearings for roughness or play and replace if needed\u003c\/li\u003e\n\u003cli\u003eAfter installation, run the engine and verify normal coolant temperature, charging voltage, and power steering operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1259\"\u003eMercury MerCruiser Power Steering Pump Pulley – 8M0150723\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1260\"\u003eMercury MerCruiser Seawater Pump Pulley – 8M0150724\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1267\"\u003eQuicksilver Water Pump Pulley – 8M0153706\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-902\"\u003eMercury MerCruiser Quicksilver Tensioner Pulley – 865777\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-891\"\u003eMercury MerCruiser Quicksilver Idler Pulley 3.50 In Diameter Grooved – 865444T\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-895\"\u003eMercury MerCruiser Quicksilver Serpentine Belt – 865615Q03\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1066\"\u003eMercury MerCruiser Quicksilver Serpentine Belt – 8M0045986\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-1218\"\u003eMercury MerCruiser Quicksilver Serpentine Belt – 8M0135333\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/merc-35\"\u003eMercury MerCruiser Power Steering Pump without Pulley – 16792A39\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is included in this kit vs. buying the belt and pulleys separately?\u003c\/strong\u003e\u003cbr\u003e\nThis OEM kit packages the serpentine belt and associated pulley(s) together as a matched set. Buying the kit ensures all components meet the same OEM specification and are designed to work together. Confirm exact contents against the Mercury parts diagram for your engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know if my MerCruiser uses a serpentine belt or a V-belt?\u003c\/strong\u003e\u003cbr\u003e\nSerpentine belt systems use a single flat ribbed belt that routes around multiple pulleys in one continuous loop. V-belt systems use one or more separate V-shaped belts. Check your engine’s accessory drive visually or look up your serial number in the Mercury parts diagram to confirm which system your engine uses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace just the belt without replacing the pulleys?\u003c\/strong\u003e\u003cbr\u003e\nYes, if the pulleys are in good condition. However, if a pulley has been running with a worn or damaged belt, inspect it carefully for groove wear and surface damage before reusing it. A worn pulley will quickly destroy a new belt.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat causes serpentine belts to fail prematurely on marine engines?\u003c\/strong\u003e\u003cbr\u003e\nThe most common causes are misaligned pulleys, a seized or rough tensioner bearing, a worn idler pulley, and saltwater or oil contamination on the belt surface. Inspect all pulleys and the tensioner whenever replacing the belt.\u003c\/p\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This kit is the right choice for a complete accessory drive service on a MerCruiser sterndrive — particularly at the 300-hour major service interval or after a belt failure. Ordering the kit is more economical than sourcing the belt and pulleys separately, and it ensures everything is replaced to OEM spec in a single service visit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e Customers sometimes order this kit without confirming their engine uses a serpentine belt system — always verify before ordering. A second common issue is replacing the belt and pulleys without inspecting the tensioner and idler bearings; a rough tensioner bearing will destroy a new belt within a season. Also watch for customers who replace only the belt after a failure without identifying what caused the belt to fail — a misaligned or seized pulley is usually the root cause and must be addressed at the same time.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563922096164,"sku":"8M0150824","price":239.84,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/images_d8a8ea12-db88-4afb-9655-bd305e14cebd.jpg?v=1787264784","url":"https:\/\/marisolmarine.com\/products\/merc-1261","provider":"Marisol Marine Company","version":"1.0","type":"link"}