{"title":"OMC 5.7L 4-Stroke Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003e\n    This page supports OMC 5.7L 4-stroke sterndrive marine engines, helping you find compatible parts and service information. Inside youll find maintenance tips, commonly replaced parts, and troubleshooting guidance. You can also browse the main Johnson\/Evinrude collection. Scroll to the bottom of this page to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by model year range and part category.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block; padding:10px 14px; background:#0a5; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Johnson\/Evinrude\/OMC Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 5.7L Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate\/serial: Check the engine block or flame arrestor tag for the GM 350 cid (5.7L) ID, and the transom assembly for the sterndrive model tag.\u003c\/li\u003e\n    \u003cli\u003eSterndrive family: 5.7L packages from the late 1980s to early 1990s typically use the OMC Cobra sterndrive; note the drive model, gear ratio, and rotation on the tag.\u003c\/li\u003e\n    \u003cli\u003eYear cues: OMC Cobra sterndrives were common circa 1986 1993. Parts can vary by year and gearcase version, so record the exact model\/serial.\u003c\/li\u003e\n    \u003cli\u003ePlatform distinction: The 5.7L V8 uses the standard Cobra gearcase (not the King Cobra lower unit), and the raw-water pump\/impeller is located in the upper gearcase.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eEngine \u0026amp; Drive Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eOMC 5.7L V8 with Cobra Sterndrive\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eV8 gasoline, 4-stroke (350 cid\/5.7L), typically carbureted or early EFI, mated to OMC Cobra sterndrive.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eOMC\/Johnson-Evinrude marine 5.7L V8 packages using Cobra drives, approx. 1986 1993.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eStrong torque, broad parts availability, straightforward service for gearcase and ignition\/fuel components.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFor 5.7L applications, use standard OMC Cobra lower-unit components (not King Cobra). Cobra water pump\/impeller is located in the upper gearcase. Proper shift-cable and interrupter switch adjustment is critical for smooth engagement.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for typical recreational use. Always follow your official service manual and local operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eUse marine-rated oil; replace filter at each oil change.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-service-maintenance-kits\"\u003eJohnson\/Evinrude\/OMC Service \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e100 hrs or annually; after submersion\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eCheck for water (milky oil). Reseal if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eJohnson\/Evinrude\/OMC Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eInspect condition and gap; replace fouled or worn plugs.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e100 hrs or annually; sooner with contaminated fuel\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eDrain water bowls and replace elements regularly to prevent lean surging.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eWater pump impeller\/kit (upper gearcase)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eEvery 2 3 seasons or 200 hrs\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eReplace sooner if overheat\/weak flow occurs or after sandy\/silty use.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eJohnson\/Evinrude\/OMC Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eInspect 50 hrs; replace at ~50% depletion\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eMatch anode material to water type (salt\/brackish\/fresh).\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude\/OMC Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eU-joint \u0026amp; exhaust bellows (inspect)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eAnnually\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eCracked bellows allow water intrusion leading to bearing\/gear damage.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bellow\"\u003eBellows\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGimbal bearing (inspect\/service)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnnually; replace if noisy\/rough\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGrease at recommended intervals; replace if vibration or rumble persists.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-bearing\"\u003eJohnson\/Evinrude\/OMC Bearings\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service  \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-service-maintenance-kits\"\u003eJohnson\/Evinrude\/OMC Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eJohnson\/Evinrude\/OMC Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Seals  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eJohnson\/Evinrude\/OMC Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers  \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude\/OMC Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection  \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude\/OMC Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical  \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System  \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"border-bottom:1px solid #ddd; text-align:left; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eOverheat alarm \/ weak water flow\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eInspect sea-water intake screens, upper gearcase impeller condition, and thermostat. Verify proper hose routing and no kinks.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eWater pump kit, thermostat, intake screen\/gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eHard shifting or stalls on shift\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eConfirm idle speed is per spec, check shift cable adjustment, and inspect the shift interrupter switch function.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eShift cable, interrupter switch, detent parts, gear oil\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eCheck prop condition\/pitch, replace fuel filter, verify ignition timing and plug condition; inspect for restricted exhaust.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003ePropeller, fuel filter, spark plugs, anti-siphon valve\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eGearcase noise \/ metal in oil\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eDrain oil to inspect for water or metal; pressure\/vacuum test the gearcase if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"border-bottom:1px solid #eee; padding:8px;\"\u003eSeals, bearings, gears, shim kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify choke\/enrichment, check for stale fuel, inspect plugs and ignition wires; for EFI\/TBI, confirm clean injectors and proper fuel pressure.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs, fuel filter, fuel pump, carb kit\/injector service\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre 5.7L OMC parts interchangeable across years?\u003c\/summary\u003e\n    \u003cp\u003eMany engine components are shared across GM 350 cid marine packages, but sterndrive and gearcase parts can vary by year and model. 5.7L applications use the standard Cobra drive rather than the King Cobra lower unit. Always confirm the exact engine and drive model\/serial before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a preventative measure, replace the raw-water pump impeller every 2 3 seasons or ~200 hours. In sandy, silty, or high-temperature environments, shorten the interval. Replace immediately if you see overheat warnings or weak water flow.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change gear oil?\u003c\/summary\u003e\n    \u003cp\u003eAt least every 100 hours or annually, and any time water intrusion is suspected (milky oil), after an impact, or prior to winterization. Pressure\/vacuum test the gearcase if contamination is found.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide engine model and serial numbers, sterndrive model (Cobra), drive gear ratio and rotation (standard or counter-rotating), and approximate model year. Photos of the nameplate and the part needing replacement also help.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border-top:1px solid #e5e5e5;\"\u003e\n  \u003cp\u003eReady to find the right parts? Browse our main Johnson\/Evinrude collection and refine by model details to locate compatible components for your OMC 5.7L V8.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block; padding:10px 14px; background:#0a5; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Johnson\/Evinrude\/OMC Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#555;\"\u003eIf youre unsure about your model, send us a photo of the nameplate and the part you need and well help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"thermostat-kit-fits-volvo-penta-4-3l-8-2l-omc-cobra-4-3l-5-8l-replaces-0769578-3853983-3852111-0986506","title":"140°F Thermostat Kit for OMC Cobra and Volvo Penta 7.4L \u0026 8.2L – Replaces 3853983, 0769578, 0986506","description":"\u003cstyle\u003e\n\/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\/* Base table styles *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\ntable.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n\/* Small screen optimization *\/\n@media (max-width:480px){\n  table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n}\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis 140°F (60°C) aftermarket thermostat kit is designed for specified OMC Cobra stern-drive and Volvo Penta stern-drive applications. The documented fitment is limited to 7.4L engines from 1994–1998 and 8.2L engines from 1998. Confirm the engine model, year, original thermostat temperature, and part numbers before ordering.\u003c\/p\u003e\n\u003cp\u003eThe kit replaces the thermostat reference 3853983 and is listed with OMC and Volvo Penta reference numbers 0769578 and 0986506. Sierra Marine 18-3676 is the corresponding 140°F thermostat kit reference.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e140°F (60°C) thermostat opening temperature.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement for the specified marine stern-drive cooling applications.\u003c\/li\u003e\n\u003cli\u003eKit includes the thermostat, thermostat gasket, and O-ring.\u003c\/li\u003e\n\u003cli\u003eComponent references are provided for identification and fitment verification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the references below to compare the replacement kit with the part installed on your engine. Part-number references do not replace verification of the complete model and year application.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eReference type\u003c\/th\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOMC \/ Volvo Penta reference\u003c\/td\u003e\n\u003ctd\u003e3853983\u003c\/td\u003e\n\u003ctd\u003e140°F thermostat reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOMC Cobra reference\u003c\/td\u003e\n\u003ctd\u003e0769578\u003c\/td\u003e\n\u003ctd\u003eThermostat kit reference listed by the company catalog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOMC Cobra reference\u003c\/td\u003e\n\u003ctd\u003e0986506\u003c\/td\u003e\n\u003ctd\u003eThermostat kit reference listed by the company catalog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra Marine reference\u003c\/td\u003e\n\u003ctd\u003e18-3676\u003c\/td\u003e\n\u003ctd\u003e140°F thermostat kit reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermostat component\u003c\/td\u003e\n\u003ctd\u003e3853983\u003c\/td\u003e\n\u003ctd\u003eThermostat included in the kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasket component\u003c\/td\u003e\n\u003ctd\u003e3852111\u003c\/td\u003e\n\u003ctd\u003eThermostat gasket included in the kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eO-ring component\u003c\/td\u003e\n\u003ctd\u003e3852071\u003c\/td\u003e\n\u003ctd\u003eO-ring included in the kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe following applications are documented for this 140°F thermostat kit. Do not extend these applications to other engine sizes, years, or thermostat temperatures without confirming the applicable service information.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand \/ drive type\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eApplication notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOMC Cobra stern drive\u003c\/td\u003e\n\u003ctd\u003e7.4L V8\u003c\/td\u003e\n\u003ctd\u003e1994–1998\u003c\/td\u003e\n\u003ctd\u003e4-Stroke gasoline\u003c\/td\u003e\n\u003ctd\u003e140°F thermostat kit application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta stern drive\u003c\/td\u003e\n\u003ctd\u003e7.4 GL, 7.4 Gi, 7.4 GSi\u003c\/td\u003e\n\u003ctd\u003eVerify by engine model and year\u003c\/td\u003e\n\u003ctd\u003e4-Stroke gasoline\u003c\/td\u003e\n\u003ctd\u003eCompany-listed model family; confirm the original part before purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOMC Cobra \/ Volvo Penta stern drive\u003c\/td\u003e\n\u003ctd\u003e8.2L V8\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e4-Stroke gasoline\u003c\/td\u003e\n\u003ctd\u003e140°F thermostat kit application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta stern drive\u003c\/td\u003e\n\u003ctd\u003e8.2 GL, 8.2 GSi\u003c\/td\u003e\n\u003ctd\u003eVerify by engine model and year\u003c\/td\u003e\n\u003ctd\u003e4-Stroke gasoline\u003c\/td\u003e\n\u003ctd\u003eCompany-listed model family; confirm the original part before purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The available catalog evidence specifically identifies the 7.4L application as 1994–1998 and the 8.2L application as 1998. The kit should not be described as fitting all 4.3L, 5.0L, 5.7L, 5.8L, 8.1L, or 8.2L engines without an applicable model-specific confirmation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct type\u003c\/dt\u003e\n\u003cdd\u003eThermostat kit\u003c\/dd\u003e\n\u003cdt\u003eThermostat temperature\u003c\/dt\u003e\n\u003cdd\u003e140°F \/ 60°C opening temperature\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eMarine gasoline stern-drive cooling systems\u003c\/dd\u003e\n\u003cdt\u003eReplacement type\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement\u003c\/dd\u003e\n\u003cdt\u003ePrimary thermostat reference\u003c\/dt\u003e\n\u003cdd\u003e3853983\u003c\/dd\u003e\n\u003cdt\u003eDocumented engine range\u003c\/dt\u003e\n\u003cdd\u003e7.4L, 1994–1998; 8.2L, 1998\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 140°F (60°C) thermostat\u003c\/li\u003e\n\u003cli\u003e1 × thermostat gasket, reference 3852111\u003c\/li\u003e\n\u003cli\u003e1 × O-ring, reference 3852071\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe included gasket and O-ring are kit components. Their availability as separate replacement parts does not change the package contents of this thermostat kit.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eAllow the engine to cool completely and disconnect the battery before starting work.\u003c\/li\u003e\n\u003cli\u003eClose or isolate the applicable cooling-water and coolant sources according to the engine manufacturer's service procedure.\u003c\/li\u003e\n\u003cli\u003eRemove the thermostat housing cover and note the installed thermostat orientation.\u003c\/li\u003e\n\u003cli\u003eRemove the old thermostat, gasket, and O-ring. Clean the mating surfaces without damaging the housing.\u003c\/li\u003e\n\u003cli\u003eInstall the new thermostat in the same orientation as the original component.\u003c\/li\u003e\n\u003cli\u003eFit the supplied gasket and O-ring in the locations specified for your engine model.\u003c\/li\u003e\n\u003cli\u003eReinstall the housing cover and tighten fasteners to the engine manufacturer's specified torque.\u003c\/li\u003e\n\u003cli\u003eRestore the cooling system, start the engine, and check for leaks and abnormal temperature behavior.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eInstallation procedures can vary between engine models. Use the applicable factory service information for torque values, coolant draining, refill, and bleeding procedures.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat temperature does this thermostat open at?\u003c\/summary\u003e\n\u003cp\u003eThis kit is listed as a 140°F (60°C) thermostat kit. Verify that your engine requires this temperature before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich engines are documented for this kit?\u003c\/summary\u003e\n\u003cp\u003eThe company catalog documents 7.4L applications from 1994–1998 and 8.2L applications from 1998. It also lists Volvo Penta 7.4 GL, 7.4 Gi, 7.4 GSi, 8.2 GL, and 8.2 GSi model families. Confirm the exact engine model, year, and original part number.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat parts are included?\u003c\/summary\u003e\n\u003cp\u003eThe kit includes one thermostat, one thermostat gasket, and one O-ring. The component references are thermostat 3853983, gasket 3852111, and O-ring 3852071.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this an OEM thermostat?\u003c\/summary\u003e\n\u003cp\u003eNo. This listing is for an aftermarket replacement kit. The OEM and aftermarket reference numbers are supplied for identification and compatibility comparison only.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this kit on a 4.3L, 5.0L, 5.7L, or 5.8L engine?\u003c\/summary\u003e\n\u003cp\u003eThose applications are not confirmed for this specific kit by the company record used for this listing. Match your exact engine model, year, thermostat temperature, and original part number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are common signs of a thermostat problem?\u003c\/summary\u003e\n\u003cp\u003ePossible symptoms include overheating, an engine that runs unusually cool, unstable temperature readings, or coolant leakage near the thermostat housing. Diagnose the complete cooling system before replacing the thermostat.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWork only on a cool engine and follow the applicable marine engine service procedure.\u003c\/li\u003e\n\u003cli\u003eDo not rely on engine size alone for fitment; verify model, year, thermostat temperature, and original part number.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when the cooling-system procedure or engine-specific requirements are uncertain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Parts Support\u003c\/strong\u003e — We provide replacement components for marine maintenance and repair applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Product references and documented applications are presented to help customers verify compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical Replacement Solutions\u003c\/strong\u003e — Aftermarket components are offered for routine marine service needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723970744635,"sku":"23TH018","price":30.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Thermostat_Kit_for_Volvo_Penta_43L_50L_57L_74L_81L_0769578_3853983_3852111___________3853983_-_JLM_MARINE-8291118.jpg?v=1763038813"},{"product_id":"v-belt-fits-ford-460-7-5l-v8-replaces-829207-48120a1","title":"V-Belt for MerCruiser 4.3L, 5.0L \u0026 5.7L Engines – Replaces 57-48120, 57-48120A1, 57-48120Q1","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eV-belt\u003c\/strong\u003e is listed for selected MerCruiser stern-drive and out-drive applications using 4.3L, 5.0L, and 5.7L engines. It is also listed for selected Volvo Penta diesel and OMC Cobra stern-drive applications. The belt is supplied as a single replacement belt, not as a kit.\u003c\/p\u003e\n\u003cp\u003eThe company catalog lists this belt as a 46-length V-belt and identifies the following manufacturer and aftermarket reference numbers. Always compare the number on your existing belt and confirm the complete engine application before ordering.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eProduct type: Marine V-belt\u003c\/li\u003e\n  \u003cli\u003eApplication: Stern-drive and out-drive engine accessory drive\u003c\/li\u003e\n  \u003cli\u003eListed belt length: 46\u003c\/li\u003e\n  \u003cli\u003ePackage type: Single replacement belt\u003c\/li\u003e\n  \u003cli\u003eAftermarket references: Sierra 18-15460; Mallory Marine 9-55002\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following references are listed for this belt. They are provided for identification and cross-reference purposes only; verify the application and belt dimensions before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand or source\u003c\/th\u003e\n        \u003cth\u003eReference numbers\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e57-48120, 57-48120A1, 57-48120Q1, 48120, 48120A1, 48120Q1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e829207, 950818, 958316, 966920\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC Cobra\u003c\/td\u003e\n        \u003ctd\u003e0310953, 0509293, 0909971, 310953, 509293, 909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-15460\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory Marine\u003c\/td\u003e\n        \u003ctd\u003e9-55002\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eFitment below follows the company catalog entries for this belt. Engine model, accessories, power-steering configuration, and production details must be checked together.\u003c\/p\u003e\n\n\u003ch3\u003eMerCruiser Stern-Drive and Out-Drive Applications\u003c\/h3\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"MerCruiser Engine Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eEngine application\u003c\/th\u003e\n        \u003cth\u003eReference numbers\u003c\/th\u003e\n        \u003cth\u003eApplication notes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3L\u003c\/td\u003e\n        \u003ctd\u003e57-48120, 57-48120A1, 57-48120Q1, 48120, 48120A1, 48120Q1\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed MerCruiser stern-drive\/out-drive application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L\u003c\/td\u003e\n        \u003ctd\u003e57-48120, 57-48120A1, 57-48120Q1, 48120, 48120A1, 48120Q1\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed MerCruiser stern-drive\/out-drive application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L\u003c\/td\u003e\n        \u003ctd\u003e57-48120, 57-48120A1, 57-48120Q1, 48120, 48120A1, 48120Q1\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed MerCruiser stern-drive\/out-drive application\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eVolvo Penta Diesel Applications\u003c\/h3\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Engine Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eEngine model\u003c\/th\u003e\n        \u003cth\u003eAccessory application\u003c\/th\u003e\n        \u003cth\u003eReference numbers\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMD21A\u003c\/td\u003e\n        \u003ctd\u003eWater pump and alternator\u003c\/td\u003e\n        \u003ctd\u003e829207\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMD21B\u003c\/td\u003e\n        \u003ctd\u003eWater pump and alternator\u003c\/td\u003e\n        \u003ctd\u003e829207\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eAQD21A \/ AQD21B\u003c\/td\u003e\n        \u003ctd\u003eListed with the MD21A\/MD21B application\u003c\/td\u003e\n        \u003ctd\u003e829207, 950818, 958316, 966920\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eOMC Cobra Stern-Drive Applications\u003c\/h3\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"OMC Cobra Engine Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eEngine application\u003c\/th\u003e\n        \u003cth\u003eYear or condition listed\u003c\/th\u003e\n        \u003cth\u003eAccessory configuration\u003c\/th\u003e\n        \u003cth\u003eReference number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e140\u003c\/td\u003e\n        \u003ctd\u003eAll listed\u003c\/td\u003e\n        \u003ctd\u003eWater pump and alternator\u003c\/td\u003e\n        \u003ctd\u003e310953\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e1978–1984\u003c\/td\u003e\n        \u003ctd\u003eWater pump, alternator, and drive-hydraulic power steering configurations as catalog-listed\u003c\/td\u003e\n        \u003ctd\u003e909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e200\u003c\/td\u003e\n        \u003ctd\u003e1979–1981\u003c\/td\u003e\n        \u003ctd\u003eWater pump, alternator, and drive-hydraulic power steering configurations as catalog-listed\u003c\/td\u003e\n        \u003ctd\u003e909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e230 \/ 260\u003c\/td\u003e\n        \u003ctd\u003e1979–1981\u003c\/td\u003e\n        \u003ctd\u003eWater pump, alternator, and drive-hydraulic power steering configurations as catalog-listed\u003c\/td\u003e\n        \u003ctd\u003e909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e2.5L\u003c\/td\u003e\n        \u003ctd\u003e1982–1987\u003c\/td\u003e\n        \u003ctd\u003eDrive-hydraulic power steering configuration\u003c\/td\u003e\n        \u003ctd\u003e909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e3.0L 181\u003c\/td\u003e\n        \u003ctd\u003e1982–1989\u003c\/td\u003e\n        \u003ctd\u003eDrive-hydraulic power steering configuration\u003c\/td\u003e\n        \u003ctd\u003e909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e7.5L V-8 460\u003c\/td\u003e\n        \u003ctd\u003eFrom 1987\u003c\/td\u003e\n        \u003ctd\u003eWater pump and alternator\u003c\/td\u003e\n        \u003ctd\u003e909971\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct type\u003c\/dt\u003e\n  \u003cdd\u003eMarine V-belt\u003c\/dd\u003e\n  \u003cdt\u003eInstallation location\u003c\/dt\u003e\n  \u003cdd\u003eExternal engine accessory drive\u003c\/dd\u003e\n  \u003cdt\u003eListed length\u003c\/dt\u003e\n  \u003cdd\u003e46\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected MerCruiser, Volvo Penta, and OMC stern-drive\/out-drive applications\u003c\/dd\u003e\n  \u003cdt\u003ePackage format\u003c\/dt\u003e\n  \u003cdd\u003eSingle belt\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x marine V-belt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and make sure the engine cannot start before servicing the belt.\u003c\/li\u003e\n  \u003cli\u003eConfirm the replacement belt reference and inspect the existing belt routing.\u003c\/li\u003e\n  \u003cli\u003eRelease the appropriate belt tension by loosening the adjustment mechanism or accessory bracket.\u003c\/li\u003e\n  \u003cli\u003eRemove the old belt and inspect the pulleys for wear, damage, contamination, and misalignment.\u003c\/li\u003e\n  \u003cli\u003eInstall the new belt following the engine manufacturer’s routing diagram.\u003c\/li\u003e\n  \u003cli\u003eAdjust belt tension according to the engine service manual. Do not rely on a generic deflection measurement when the manufacturer specifies another procedure.\u003c\/li\u003e\n  \u003cli\u003eTighten the adjustment and mounting hardware, then recheck belt alignment and tension.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery and run the engine briefly while checking belt tracking. Stop immediately if the belt slips, walks off a pulley, or produces abnormal noise.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my V-belt is worn?\u003c\/summary\u003e\n  \u003cp\u003eInspect for cracking, glazing, fraying, abnormal wear, contamination, or loss of tension. Squealing or belt movement during operation can also indicate slipping, incorrect tension, pulley misalignment, or a worn pulley.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this belt fit every MerCruiser 4.3L, 5.0L, or 5.7L engine?\u003c\/summary\u003e\n  \u003cp\u003eNo. The company catalog lists the belt for these engine sizes, but accessory configuration and engine-specific changes can affect fit. Match the reference number and belt dimensions with your existing belt and service information before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs the OMC 7.5L V-8 460 application for every year?\u003c\/summary\u003e\n  \u003cp\u003eThe company catalog specifically lists the OMC 7.5L V-8 460 application from 1987. Earlier or otherwise different configurations should not be assumed to fit without matching the reference number and belt routing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this listing include a pulley, tensioner, or additional hardware?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for one replacement V-belt only.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I use this belt on a non-marine engine?\u003c\/summary\u003e\n  \u003cp\u003eThis product is catalog-listed for marine stern-drive and out-drive applications. Do not assume fitment on a non-marine engine solely because the belt appears physically similar.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat should I verify before ordering?\u003c\/summary\u003e\n  \u003cp\u003eVerify the engine brand, model, displacement, stern-drive or out-drive configuration, accessory arrangement, belt routing, and the reference number from the old belt or service manual. If any of these details differ, confirm compatibility before purchase.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWork only with the engine stopped, cool, and secured against accidental starting.\u003c\/li\u003e\n  \u003cli\u003eVerify the belt reference, dimensions, routing, and tension requirements for the exact engine configuration.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine if the belt is misaligned, loose, damaged, or contacting nearby components.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement belt and is not represented as an original manufacturer part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cp\u003eWe provide marine replacement parts and application information to help you identify the correct service component. Because marine engines can vary by accessory configuration and production change, careful reference-number and application matching is recommended before installation.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723970875707,"sku":"23BL230","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23BL23082920748120A1_48120Q1_57-48120A1BELT_1.jpg?v=1763038814"}],"url":"https:\/\/seasierra.com\/collections\/omc-5-7l-4-stroke-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}