{"title":"Volvo Penta 4-Stroke 2.3L-7.5L Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eParts and guidance for Volvo Penta 4‑Stroke 2.3L–7.5L marine engines. This page helps you find compatible components and service information, with maintenance tips, frequently replaced parts, and troubleshooting guidance. You can also browse the main Volvo Penta collection. Scroll to the bottom of this page to start browsing parts for these engines. On the collection page, use the Filter \u0026amp; Sort controls to narrow by horsepower\/displacement, year range, and part category.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0a4a7a;border-radius:4px;text-decoration:none;\"\u003eBrowse All Volvo Penta Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your 2.3L–7.5L Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate location: look for the engine ID\/serial plate on the starboard side of the engine block or flywheel housing. A secondary label is often on the rocker\/valve cover. The drive unit (SX\/DPS) has its own tag on the transom assembly.\u003c\/li\u003e\n    \u003cli\u003eReading the model code: the engine designation typically includes displacement and a trim (e.g., GL, Gi, GXi) indicating carbureted, TBI, or EFI. Suffix letters\/numbers can note year revisions or emission variants.\u003c\/li\u003e\n    \u003cli\u003ePlatform hints: 2.3L–3.0L are usually inline‑4; 4.3L is V6; 5.0L\/5.7L are small‑block V8; 7.4L\/7.5L are big‑block V8. This helps predict ignition, impeller, belt, and filter styles.\u003c\/li\u003e\n    \u003cli\u003eDrive identification: “SX” indicates single‑prop sterndrive; “DPS” indicates Duoprop. Propellers, bellows kits, and some anodes differ by drive type.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eInline‑4 (2.3L–3.0L)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑4, 4‑stroke gasoline; carbureted or TBI\/EFI depending on year.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e2.3L\/3.0L inline‑four gasoline models across GL\/Gi trims.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eSimplicity, economical operation, compact service access.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eImpeller, ignition, and belt styles vary by year\/trim—confirm via serial tag.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV6 (4.3L)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003e60° V6 gasoline, carb\/TBI\/EFI depending on generation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e4.3L GL\/Gi\/GXi families used with SX or DPS drives.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eGood torque and fuel economy; broad parts availability.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eDrive type (SX vs DPS) affects prop, anodes, and some sealing hardware.\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%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003e90° V8 gasoline, carb\/EFI depending on model year and trim.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e5.0L\/5.7L GL\/Gi\/GXi families.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eStrong mid‑range, wide prop options, common service parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eVerify serpentine vs V‑belt, alternator output, and seawater pump style by serial.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBig‑Block V8 (7.4L–7.5L)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eBig‑block V8 gasoline, typically carb or EFI depending on generation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e7.4L\/7.5L big‑block families used on heavier boats and twin installs.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eHigh torque for planing heavy hulls; robust cooling and charging options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eCooling and exhaust components differ from small‑block—match by serial and drive.\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 0;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for typical recreational use; always follow the official Volvo Penta service manual for your exact model and duty cycle.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;max-width:1000px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd\u003eUse marine‑rated oil; change more often in harsh duty.\u003c\/td\u003e\n        \u003ctd\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\u003eSterndrive gear oil\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd\u003eInspect for water intrusion and metal debris at each change.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta\"\u003eVolvo Penta\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd\u003eReplace sooner if fuel contamination is suspected.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-fuel-filters\"\u003eVolvo Penta Fuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003e100–200 hrs\u003c\/td\u003e\n        \u003ctd\u003eGap and heat range vary by platform; verify by model.\u003c\/td\u003e\n        \u003ctd\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\u003eSeawater pump impeller\u003c\/td\u003e\n        \u003ctd\u003e200 hrs or every 2 seasons\u003c\/td\u003e\n        \u003ctd\u003eReplace sooner if overheat or weak tell‑tale is observed.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-impellers\"\u003eVolvo Penta Impellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAnodes (engine\/drive)\u003c\/td\u003e\n        \u003ctd\u003eInspect 50 hrs; replace \u0026lt;50% remaining\u003c\/td\u003e\n        \u003ctd\u003eMatch material (zinc\/aluminum\/magnesium) to your water type.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-anodes\"\u003eVolvo Penta Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDrive bellows (exhaust, u‑joint)\u003c\/td\u003e\n        \u003ctd\u003eEvery 2–3 years\u003c\/td\u003e\n        \u003ctd\u003eCracked bellows risk water intrusion and costly repairs.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bellow\"\u003eBellows\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSerpentine\/V‑belt\u003c\/td\u003e\n        \u003ctd\u003eInspect each season; replace 2–3 years\u003c\/td\u003e\n        \u003ctd\u003eLook for glazing, cracks, or chirp under load.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eThermostat\u003c\/td\u003e\n        \u003ctd\u003eEvery 3–5 years\u003c\/td\u003e\n        \u003ctd\u003eSticking thermostats cause slow warm‑up or overheating.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta\"\u003eVolvo Penta\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 0;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-service-maintenance-kits\"\u003eVolvo Penta Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System (Pumps): \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-water-pumps\"\u003eVolvo Penta Water Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eImpeller Kits: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-impellers\"\u003eVolvo Penta Impellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System Filtration: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-fuel-filters\"\u003eVolvo Penta Fuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \u0026amp; Starting: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-starters\"\u003eVolvo Penta Starters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hardware: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-propellers\"\u003eVolvo Penta Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-anodes\"\u003eVolvo Penta Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;max-width:1000px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOverheat alarm \/ weak water stream\u003c\/td\u003e\n        \u003ctd\u003eInspect intake screens, seawater strainer, and impeller; verify hose clamps and thermostat.\u003c\/td\u003e\n        \u003ctd\u003eImpeller kit, seawater pump, thermostat, intake screen, anodes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck fuel quality, replace fuel filter, inspect plugs and ignition components; confirm prop pitch\/load.\u003c\/td\u003e\n        \u003ctd\u003eFuel filter\/water separator, spark plugs, plug wires\/coil, propeller\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd\u003eVerify battery voltage and starter draw; check choke\/IAC operation, vacuum leaks, and plug condition.\u003c\/td\u003e\n        \u003ctd\u003eStarter, ignition components, carb\/EFI service parts, intake gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd\u003eConfirm correct oil level; look for water intrusion; inspect bellows, seals, and u‑joints.\u003c\/td\u003e\n        \u003ctd\u003eGearcase seal kit, bellows kit, anodes, prop hardware\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 0;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome service items (plugs, filters, anodes) overlap, but many components differ by displacement, fuel system (carb\/TBI\/EFI), and drive type (SX\/DPS). Always verify with the engine and drive serial numbers.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a preventive measure, replace the seawater pump impeller every 200 hours or every two seasons—sooner if you see overheating, weak flow, or rubber vane debris in the pump.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should sterndrive gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eFor typical recreational use, change sterndrive gear oil every 100 hours or annually. Inspect for water or metal fines; contamination indicates a sealing or wear issue that should be addressed immediately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the engine serial\/ID, displacement and trim (e.g., GL, Gi, GXi), the sterndrive model (SX or DPS) with its serial, plus boat year\/model. Photos of the nameplate and the part to be replaced help us verify an exact match.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eReady to find the right components? Browse the main Volvo Penta collection and use the filters to narrow by horsepower\/displacement, year, and model.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0a4a7a;border-radius:4px;text-decoration:none;\"\u003eBrowse All Volvo Penta Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n  \u003cp style=\"font-size:0.95em;color:#444;\"\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":"trim-sender-sending-unit-fits-omc-volvo-penta-replaces-984748-3850470-0984731-0983939","title":"Aftermarket Trim Sender Sensor for OMC Cobra and Volvo Penta Stern Drives – Replaces 3850470, 984748, 0984748","description":"\u003csection\u003e\n\n\u003c!-- Table styles --\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:560px; }\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; word-break:normal; letter-spacing:normal;\n    font-weight:600; 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\u003etrim sender sensor\u003c\/strong\u003e is designed for OMC Cobra stern-drive applications and is also listed for Volvo Penta stern-drive applications. It monitors sterndrive trim position so the boat's trim gauge can display the drive angle.\u003c\/p\u003e\n\u003cp\u003eThe primary replacement references listed for this sensor are \u003cstrong\u003e3850470\u003c\/strong\u003e, \u003cstrong\u003e984748\u003c\/strong\u003e, and \u003cstrong\u003e0984748\u003c\/strong\u003e. Sierra Marine reference \u003cstrong\u003e18-7634\u003c\/strong\u003e is also associated with the OMC Cobra trim sender application and replaces OMC reference 984748.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTrim position sensor for stern-drive systems.\u003c\/li\u003e\n  \u003cli\u003eDesigned as an aftermarket replacement for the listed reference numbers.\u003c\/li\u003e\n  \u003cli\u003eSuitable for OMC Cobra and Volvo Penta stern-drive applications as listed.\u003c\/li\u003e\n  \u003cli\u003eVerify the reference number and physical configuration before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to compare your existing sensor with this replacement. Reference numbers may vary by drive configuration and model year.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Trim sender 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\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e3850470\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e984748\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e0984748\u003c\/td\u003e\n        \u003ctd\u003eOEM reference listed by the supplier\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-7634\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference; replaces 984748\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdditional catalog references\u003c\/td\u003e\n        \u003ctd\u003e0983939, 0984731\u003c\/td\u003e\n        \u003ctd\u003eReference numbers associated with the Cobra trim sensor application in aftermarket catalog data\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 supplier lists this sensor for \u003cstrong\u003eOMC Cobra\u003c\/strong\u003e and \u003cstrong\u003eVolvo Penta\u003c\/strong\u003e stern-drive applications. A catalog listing associates reference 3850470 with Cobra applications from approximately \u003cstrong\u003e1987–1993\u003c\/strong\u003e; use the part-number match as the primary fitment check because exact coverage can vary by drive configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Trim sender compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eDrive or Application\u003c\/th\u003e\n        \u003cth\u003eCatalog Year Range\u003c\/th\u003e\n        \u003cth\u003eAssociated References\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003eCobra stern drive\u003c\/td\u003e\n        \u003ctd\u003e1987–1993 catalog application\u003c\/td\u003e\n        \u003ctd\u003e3850470, 984748, 18-7634\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eStern drive\u003c\/td\u003e\n        \u003ctd\u003eVerify by reference number\u003c\/td\u003e\n        \u003ctd\u003e0984748; additional catalog references include 0983939 and 0984731\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 Do not rely on engine displacement, brand, or year alone. Compare the number on your original sender and confirm the mounting arrangement and connector before installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eTrim sender sensor\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eOMC Cobra and Volvo Penta stern-drive applications\u003c\/dd\u003e\n  \u003cdt\u003eProduct Construction\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement component\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Replacement References\u003c\/dt\u003e\n  \u003cdd\u003e3850470, 984748, 0984748\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003eSierra Marine 18-7634\u003c\/dd\u003e\n  \u003cdt\u003eCatalog Application\u003c\/dt\u003e\n  \u003cdd\u003eOMC Cobra, approximately 1987–1993 in the referenced catalog data\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 Trim sender sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a single replacement sensor, not a kit. Mounting hardware, wiring, gauges, and other sterndrive components are not included unless specifically supplied with the order.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eSwitch off the engine and disconnect the boat battery before beginning electrical work.\u003c\/li\u003e\n  \u003cli\u003eLocate the existing trim sender on the sterndrive and compare its shape, mounting position, and reference number with the replacement.\u003c\/li\u003e\n  \u003cli\u003eLabel or photograph the existing wiring before disconnecting it.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the old sender carefully and remove its retaining hardware.\u003c\/li\u003e\n  \u003cli\u003eClean the mounting area and inspect the surrounding wiring and terminals for corrosion or damage.\u003c\/li\u003e\n  \u003cli\u003ePosition the replacement sensor in the same orientation as the original and secure it with suitable original hardware where applicable.\u003c\/li\u003e\n  \u003cli\u003eReconnect the wiring, restore battery power, and test the trim gauge with the drive movement.\u003c\/li\u003e\n  \u003cli\u003eIf the gauge reading is reversed, inaccurate, or does not respond, switch off the battery and recheck the wiring, orientation, and reference-number match.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFollow the installation instructions for your specific sterndrive. If the original mounting hardware or wiring is damaged, professional marine service is recommended.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat does a trim sender sensor do?\u003c\/summary\u003e\u003cp\u003eThe trim sender detects the sterndrive's trim position and transmits that position to the boat's trim gauge.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common symptoms of a failed trim sender?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include an erratic gauge, a gauge that remains at one position, a gauge that does not respond when the drive moves, or a reading that does not match the actual sterndrive position.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every OMC Cobra or Volvo Penta drive?\u003c\/summary\u003e\u003cp\u003eNo universal fitment should be assumed. The supplier lists the product for OMC Cobra and Volvo Penta stern-drive applications, while catalog data associates the 3850470 reference with Cobra applications from approximately 1987–1993. Confirm the existing reference number and physical configuration before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the package include a wiring harness or trim gauge?\u003c\/summary\u003e\u003cp\u003eNo. The package contains one trim sender sensor. A wiring harness, trim gauge, mounting hardware, and other components are not included unless specifically stated with the order.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the sensor require calibration?\u003c\/summary\u003e\u003cp\u003eAfter installation, check the gauge at the full-up and full-down drive positions. If the reading is inaccurate, inspect the sensor orientation, wiring, mounting, and part-number match before operating the boat.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement sensor. OMC and Volvo Penta numbers shown on this page are reference numbers used for identification and compatibility comparison; the replacement itself is not represented as an OEM-manufactured component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I avoid ordering the wrong sensor?\u003c\/summary\u003e\u003cp\u003eMatch the number on your existing sender to the references listed above and compare the mounting arrangement and connector. If the original component differs, verify compatibility before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDisconnect the battery before handling the sensor wiring.\u003c\/li\u003e\n  \u003cli\u003eConfirm the reference number, mounting arrangement, and connector before installation.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the boat if the trim gauge gives an unsafe or clearly incorrect reading.\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 sterndrive or wiring is corroded, damaged, or difficult to access.\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 Replacement Parts\u003c\/strong\u003e — We supply aftermarket components for common marine repair applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReference-Based Fitment\u003c\/strong\u003e — Product references are provided to help customers compare replacement parts with their original components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport for Your Repair\u003c\/strong\u003e — Verify the application and part number before installation for the best result.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723791601979,"sku":"21TS001","price":71.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Trim_Power_Sender_for_Volvo_Penta_Johnson_Evinrude_OMC_Cobra_Sterndrive________3850470_-_JLM_MARINE-8287195.jpg?v=1763031883"}],"url":"https:\/\/seasierra.com\/collections\/volvo-penta-4-stroke-2-3l-7-5l-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}