{"title":"OMC 4-Stroke 4.3L-8.2L Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003e\n    This page supports OMC 4‑Stroke 4.3L–8.2L marine engines, helping you quickly find compatible parts and service information. Below you’ll find maintenance tips, commonly replaced components, and troubleshooting guidance. You can also browse the main Johnson\/Evinrude\/OMC collection. Scroll to the bottom of the page to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; 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=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your OMC 4.3L–8.2L Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial\/nameplate: typically on the engine block, intake manifold area, or on the transom\/drive bracket for sterndrive packages. Record both the engine serial and the drive (e.g., Cobra) identification if present.\u003c\/li\u003e\n    \u003cli\u003eRead the model details: note displacement (4.3L V6; 5.0\/5.7\/7.4\/8.2L V8), fuel system (carb, TBI, or EFI), and key suffixes that may indicate configuration (cooling style, harness revision, or mounting orientation).\u003c\/li\u003e\n    \u003cli\u003eVortec vs. pre‑Vortec: many 4.3L\/5.7L engines transitioned to Vortec cylinder heads—intake manifolds, ignition components, and some gaskets differ. Use the serial or casting numbers to confirm.\u003c\/li\u003e\n    \u003cli\u003e4‑Stroke service specifics: these GM‑based marine engines have engine oil and filter, alternator belts, thermostats, seawater pumps, and exhaust water‑jacketed manifolds\/risers to track in maintenance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003e4.3L V6 (262 CID)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e90° V6 4‑stroke; carbureted or TBI\/EFI depending on year; raw or fresh‑water cooling packages.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eOMC 4.3L V6 sterndrive packages (carb or TBI); Vortec and pre‑Vortec variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCompact footprint, good mid‑range torque, widely supported ignition and 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;\"\u003eVortec heads\/manifolds differ from earlier 262 CID parts. Harnesses, senders, and ECM modules vary by fuel system and year—verify by serial.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eSmall‑Block V8 (5.0L \/ 5.7L)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e90° V8 4‑stroke; carbureted or TBI\/EFI; raw or fresh‑water cooling; multiple alternator and bracket options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eOMC 5.0L\/5.7L sterndrive packages across various years; often share service items with 4.3L except intake\/ignition sizing.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eBroad parts availability, strong overall performance, common marine accessories.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eManifold\/risers, thermostat housings, and ignition components can be year‑specific. Confirm carb\/TBI\/EFI style before ordering fuel parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBig‑Block V8 (7.4L \/ 8.2L)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e90° big‑block V8 4‑stroke; typically carb\/TBI on older setups; heavy‑duty cooling, exhaust, and transmission hardware.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eOMC 7.4L\/8.2L packages used in performance and cruiser applications; multiple gear ratios\/transmissions in use.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eHigh torque for larger hulls; robust accessory and cooling 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;\"\u003eExhaust manifolds\/risers, oil cooler setups, and power‑steering brackets differ from small‑block engines. Verify hose routing and thermostat housing style.\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=\"margin-top:24px;\"\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 engine’s official service manual and adjust for hours, load, and environment (salt vs. fresh water).\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eChange sooner for severe duty or long idle periods.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eGear oil (drive \/ lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect for water intrusion\/metal; reseal if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect annually; replace ~300 hours or 3 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eGap to spec; replace sooner for fouling or misfire.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark plug\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace immediately if water or debris is present.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eRaw‑water pump impeller\/kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 1–2 seasons (annually in salt\/sand)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eKey for cooling; replace proactively to prevent overheat.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAnodes (zinc\/aluminum\/magnesium)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect often; replace at ~50% depletion\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eChoose alloy for your water type; keep clean\/tight.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAccessory\/alternator belt\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect each service; replace if cracked or noisy\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eProper belt tension is critical for charging and cooling pump drive.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelt\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=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater pumps\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\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    \u003cli\u003eIgnition \u0026amp; Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e and \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\u003ePropulsion – \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\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=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; padding:8px; border-bottom:1px solid #e5e7eb;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWeak water flow \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect seawater intake screens\/strainers; verify impeller condition; confirm thermostat operation; check hose kinks or leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWater pump impeller kit, thermostat, intake screen\/strainer, hoses\/clamps, anodes.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace fuel\/water separator; check fuel quality and venting; inspect spark plugs\/wires; verify throttle linkage and timing\/ECM fault codes.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFuel filter, spark plugs, ignition leads, propeller (pitch\/damage), sensors (MAP\/knock as applicable).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCheck battery state and cables; verify choke\/enrichment (carb) or IAC\/TBI injector spray; inspect vacuum leaks and base timing.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eStarter, spark plugs, fuel filter, gaskets (intake\/carb), EFI\/TBI sensors.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eDrain and inspect gear lube; check for water intrusion; inspect prop shaft for fishing line; pressure\/vacuum test and reseal as needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eLower unit seal kit, bearings, prop shaft seal, gear lube.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLow charging voltage\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect alternator belt tension; test alternator output; check connections and grounds.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAlternator, belt, electrical connectors.\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=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome gaskets, filters, and hardware are shared, but many components differ by displacement, cylinder head style (Vortec vs. pre‑Vortec), and fuel system (carb\/TBI\/EFI). Always confirm with engine serial\/model information before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the seawater pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eReplace every 1–2 seasons, or annually in sandy\/silty or saltwater use. Replace immediately if you notice weak water flow, rising temperatures, or if the pump was run dry.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change the drive (lower unit) gear oil?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, service every 100 hours or at least once per season. Inspect for water or metal; if contamination is present, reseal the unit and re‑test.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the engine serial\/model, displacement (4.3\/5.0\/5.7\/7.4\/8.2L), fuel system type (carb\/TBI\/EFI), cooling configuration (raw vs. fresh water), and any casting\/ECM numbers. Photos of the nameplate and the part needing replacement are very helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"margin-top:24px;\"\u003e\n  \u003cp\u003eReady to find parts by model and year? Browse our main Johnson\/Evinrude\/OMC collection and use Filter \u0026amp; Sort to narrow by your engine’s details.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Johnson\/Evinrude\/OMC Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#6b7280;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"upper-exhaust-bellow-fits-omc-volvo-penta-4-3l-8-2l-replaces-3852696-913405","title":"Upper Exhaust Bellows for OMC Cobra and Volvo Penta Stern Drives – 4.3L to 8.2L, Replaces 3852696","description":"\u003csection\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 \u003cstrong\u003eUpper Exhaust Bellows\u003c\/strong\u003e is an aftermarket replacement for selected OMC Cobra and Volvo Penta stern-drive and out-drive applications. It is used in the upper exhaust connection and is listed for compatible 4.3L through 8.2L marine engine applications.\u003c\/p\u003e\n\u003cp\u003eThe company fitment record identifies this exhaust and cooling hose as a replacement for OEM number \u003cstrong\u003e3852696\u003c\/strong\u003e. Catalog references also identify Sierra \u003cstrong\u003e18-2779\u003c\/strong\u003e as an exhaust hose that replaces 3852696. Always compare the existing hose, drive configuration, engine model, and application details before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUpper exhaust bellows for selected OMC Cobra and Volvo Penta stern-drive applications.\u003c\/li\u003e\n  \u003cli\u003eSingle replacement bellows; this is not a multi-part kit.\u003c\/li\u003e\n  \u003cli\u003eDesigned to connect the upper exhaust path and help maintain a secure exhaust and cooling-hose connection.\u003c\/li\u003e\n  \u003cli\u003eConfirm the part number and physical hose dimensions before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are manufacturer or aftermarket cross-reference numbers associated with this upper exhaust bellows. Cross-reference numbers are provided for identification and should be checked against the complete 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\u003eBrand or Reference\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference Type\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\u003e3852696\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEvinrude \/ Johnson \/ OMC \/ BRP\u003c\/td\u003e\n\u003ctd\u003e3852696\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEvinrude \/ Johnson\u003c\/td\u003e\n\u003ctd\u003e778072\u003c\/td\u003e\n\u003ctd\u003eOEM reference listed by the company catalog\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEvinrude\u003c\/td\u003e\n\u003ctd\u003e0913405\u003c\/td\u003e\n\u003ctd\u003eOEM reference listed by the company catalog\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003e913405\u003c\/td\u003e\n\u003ctd\u003eOEM reference listed by the company catalog\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e89224\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory Marine\u003c\/td\u003e\n\u003ctd\u003e9-72802\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra Marine\u003c\/td\u003e\n\u003ctd\u003e18-2779\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company application record lists the following compatible engine model families. The listed models are grouped by engine size; year, serial-number, shaft-length, and individual drive-configuration restrictions are not provided in the company record. Confirm the complete engine and stern-drive identification before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eEngine Size\u003c\/th\u003e\n        \u003cth\u003eListed Models\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e4.3L\u003c\/td\u003e\n        \u003ctd\u003eGL, GS, GI, GXI, OSI\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e5.0L\u003c\/td\u003e\n        \u003ctd\u003eFI, GL, FL, GXI, OSI\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e5.7L\u003c\/td\u003e\n        \u003ctd\u003eGL, GI, GIL, OSI, GXI, OSXI\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e5.8L\u003c\/td\u003e\n        \u003ctd\u003eFL, FI, FSI\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e7.4L\u003c\/td\u003e\n        \u003ctd\u003eGL, GI\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e8.1L\u003c\/td\u003e\n        \u003ctd\u003eGI, GXI, OSI\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e8.2L\u003c\/td\u003e\n        \u003ctd\u003eGL\u003c\/td\u003e\n        \u003ctd\u003eNot specified in the company record\u003c\/td\u003e\n        \u003ctd\u003e3852696\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eUpper exhaust bellows \/ exhaust hose\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected OMC Cobra and Volvo Penta stern-drive and out-drive systems\u003c\/dd\u003e\n  \u003cdt\u003eEngine Range\u003c\/dt\u003e\n  \u003cdd\u003eListed applications from 4.3L through 8.2L\u003c\/dd\u003e\n  \u003cdt\u003ePrimary OEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e3852696\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket References\u003c\/dt\u003e\n  \u003cdd\u003eGLM 89224, Mallory Marine 9-72802, Sierra Marine 18-2779\u003c\/dd\u003e\n  \u003cdt\u003ePhysical Dimensions\u003c\/dt\u003e\n  \u003cdd\u003eVerify the dimensions of the original hose and the available mounting space before installation.\u003c\/dd\u003e\n  \u003cdt\u003eMaterial and Color\u003c\/dt\u003e\n  \u003cdd\u003eNot specified in the company product record.\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Position\u003c\/dt\u003e\n  \u003cdd\u003eUpper exhaust connection\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Upper Exhaust Bellows\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHose clamps, tools, gaskets, and other installation hardware are not listed as included unless specifically supplied with the order.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn off the engine, remove the ignition key, and disconnect the battery before beginning work.\u003c\/li\u003e\n  \u003cli\u003eGain access to the upper exhaust connection and identify the existing hose routing and clamp positions.\u003c\/li\u003e\n  \u003cli\u003eLoosen and remove the clamps, then remove the old bellows without damaging the adjoining exhaust or drive components.\u003c\/li\u003e\n  \u003cli\u003eClean and inspect both mounting surfaces. Replace corroded clamps or damaged adjacent components as required.\u003c\/li\u003e\n  \u003cli\u003ePosition the replacement bellows in the same orientation as the original and seat it fully on both connections.\u003c\/li\u003e\n  \u003cli\u003eSecure the hose with suitable clamps tightened according to the engine or drive manufacturer's service instructions.\u003c\/li\u003e\n  \u003cli\u003eAfter installation, reconnect the battery and inspect the area while running the engine. Check for exhaust, water, or cooling-system leaks before returning the boat to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm that this bellows fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eStart by checking whether your engine and drive match the listed OMC Cobra or Volvo Penta application and whether the existing component corresponds to OEM reference 3852696. Compare the original hose's position, connection size, and overall dimensions. Because year and serial-number limits are not supplied in the company record, confirm those details with the engine or drive service information when applicable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between an upper and lower exhaust hose?\u003c\/summary\u003e\n  \u003cp\u003eThis product is an upper exhaust bellows. Upper and lower exhaust hoses can have different dimensions, shapes, and application ranges. Do not substitute a lower hose solely because the engine displacement appears similar.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a damaged exhaust bellows?\u003c\/summary\u003e\n  \u003cp\u003eInspect for cracks, splits, hardening, deformation, loose connections, exhaust odor, water leakage, or visible deterioration. A damaged exhaust bellows should be replaced promptly to help prevent further exhaust and water-ingress problems.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eAre clamps included?\u003c\/summary\u003e\n  \u003cp\u003eNo clamps or other hardware are specified as included. Reuse existing hardware only if it is suitable and in good condition, and follow the manufacturer's service instructions for clamp selection and tightening.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is for an aftermarket replacement bellows. OEM and aftermarket numbers are shown only as application and cross-reference information. OMC, Volvo Penta, Evinrude, Johnson, BRP, GLM, Mallory, and Sierra are referenced trademarks of their respective owners.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete engine, stern-drive, and existing-part details before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on engine displacement alone; upper and lower exhaust hoses may not be interchangeable.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine and exhaust components to cool before installation.\u003c\/li\u003e\n  \u003cli\u003eInspect the finished installation for exhaust and water leaks before operating the boat.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when access is restricted or the drive and exhaust system require disassembly.\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 a range of marine engine and stern-drive applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product pages include available OEM and aftermarket references to help with part identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService-Minded Assistance\u003c\/strong\u003e — Contact support with your engine model, drive model, and existing part number if you need help comparing an application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723797500219,"sku":"17B1011","price":24.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Upper_Exhaust_Bellow_for_OMC_Cobra_Stern_Drive_Volvo_Penta_43_50_58_74_81_82_L_King_460_Engines_______3852696_-_JLM_MARINE-8287778.jpg?v=1763032019"}],"url":"https:\/\/seasierra.com\/collections\/omc-4-stroke-4-3l-8-2l-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}