{"title":"Mercury 2-Stroke 9.8HP Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n \u003cp\u003eParts and maintenance guide for Mercury 2-Stroke 9.8HP outboard engines. Use this page to find compatible parts, routine service information, maintenance tips, common replacement items, and troubleshooting guidance. You can also browse the main Mercury collection. Scroll to the bottom of the page to start browsing parts for this engine, and on the collection page use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;padding:10px 14px;background:#0a3d62;color:#fff;text-decoration:none;border-radius:4px;\"\u003eBrowse All Mercury Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px 0;\"\u003e\n \u003ch2\u003eHow to Identify Your 9.8HP Model\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eFind the serial\/nameplate: typically stamped on the transom clamp bracket or swivel bracket. This serial is the key reference for accurate parts lookup.\u003c\/li\u003e\n \u003cli\u003eUnderstand suffixes and options: short shaft (often “S” ~15) vs long shaft (often “L” ~20) affect driveshaft housing and water tube\/impeller stack. Note control type (tiller vs. remote) and starting (manual vs. electric).\u003c\/li\u003e\n \u003cli\u003e2-Stroke identifiers: requires premix or an oil-injection system; visible choke and carburetor. Some 9.8HP models use either Tillotson or Walbro (WMB series) carb variants across serial ranges.\u003c\/li\u003e\n \u003cli\u003eRecord what you see: carb stamp (if visible), shaft length, and serial number. These details help verify water pump kits, carburetor service parts, and ignition items.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px 0;\"\u003e\n \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n \u003ch3\u003eMercury 9.8HP 2\t-Stroke Twin (Carbureted)\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;padding:8px;\"\u003eFeature\u003c\/th\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;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 #eee;\"\u003eConfiguration\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInline 2-cylinder, carbureted 2-stroke outboard; manual choke; lightweight portable class.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eMercury 9.8HP 2-Stroke in short- and long-shaft versions; tiller or remote control; manual or electric start depending on serial range.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSimple service, strong low-mid torque, and very good portability for small boats and tenders.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCarburetor supplier varies by serial (e.g., Tillotson vs. Walbro WMB). Some cooling and gearcase parts differ by shaft length and serial breaksverify with your serial number.\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 typical guidelines for small 2-strokes; always follow your engines official service manual and maintenance schedule.\u003c\/p\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;padding:8px;\"\u003eItem\u003c\/th\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\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 #eee;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck for water (milky oil). Replace sealing washers; reseal if intrusion is found.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect each season; replace ~100 hours\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eUse the correct heat range and gap; fouled plugs cause hard starting and poor idle.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filter (inline)\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace and inspect for debris or water. Check hose condition at the same time.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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 #eee;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e100 hours or 2 seasons (annually in sandy\/silty water)\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWeak tell-tale or overheat warnings often indicate impeller wear. Verify kit by serial and shaft length.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAnodes (zincs)\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect often; replace when ~50% depleted\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eChoose material for your water (zinc\/salt, aluminum\/brackish, magnesium\/fresh). Maintain clean, tight contact.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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;border-bottom:1px solid #eee;\"\u003eFuel line \u0026amp; quick connector\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 2 years or at first sign of cracks\/leaks\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEthanol can harden hoses. Replace primer bulb if it wont firm up or cracks.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-connector\"\u003eFuel Line \u0026amp; Connector\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e2-Stroke fuel\/oil mix\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery fill-up\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eMix gasoline with TC-W3 marine 2-stroke oil per the service manual (many run 50:1). Use fresh fuel.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\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\u003eCooling System \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\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 \/ Electrical \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003eGearcase \u0026amp; Seals \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003eCarburetor \u0026amp; Induction \u003ca href=\"https:\/\/seasierra.com\/collections\/carburetor\"\u003eCarburetor\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 \u003cli\u003eSafety Add-ons \u003ca href=\"https:\/\/seasierra.com\/collections\/propeller-guards\"\u003ePropeller Guards\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:960px;border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\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 #eee;\"\u003eWeak tell-tale or overheat alarm\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect intake screen for blockage; test impeller output; verify thermostat function; confirm water tube alignment on reassembly.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump kit, intake screen, thermostat, gaskets\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfirm choke operation; prime bulb should get firm; check for air leaks at tank quick-connector; inspect idle mixture and carb cleanliness.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCarburetor repair kit, fuel connector\/lines, spark plugs\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck propeller for damage or over-pitching; replace clogged fuel filter; verify full throttle opening and timing per manual.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePropeller, fuel filter, carb kit, spark plugs\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eExcessive smoke (2-Stroke)\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfirm premix ratio; ensure choke is not stuck closed; look for rich idle mixture settings.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs, carburetor repair kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGearcase noise \/ metal in oil\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eDrain and inspect gear oil; check for water intrusion at seals; verify prop shaft is straight and hardware torqued.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLower unit seal kit, bearings, prop shaft 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 carb suppliers?\u003c\/summary\u003e\n \u003cp\u003eMany service items interchange across serial ranges, but some components differ by serial number and carburetor supplier (e.g., Tillotson vs. Walbro). Always confirm using your engines serial and visible carb stamp when applicable.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhen should the water pump impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a preventative measure every 100 hours or 2 seasons, and annually if you operate in silty\/sandy water or notice a weak tell-tale stream. Replace sooner after any overheat event.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should I change lower unit gear oil?\u003c\/summary\u003e\n \u003cp\u003eChange gear oil every 100 hours or at least once per season. If oil appears milky, reseal the gearcase and retest to prevent bearing and gear damage.\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 number, shaft length (S\/L), starting type (manual\/electric), control type (tiller\/remote), and any carburetor stamps. Photos of the nameplate and the part being replaced are very helpful.\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 parts you need? Browse the Mercury collection and filter by horsepower, model, and category to zero in on components for your 9.8HP 2-Stroke.\u003c\/p\u003e\n \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;padding:10px 14px;background:#0a3d62;color:#fff;text-decoration:none;border-radius:4px;\"\u003eShop Mercury Outboard 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":"fuel-filter-fits-mercury-marine-4-85-hp-inline-engines-replaces-1399-3938","title":"Fuel Filter – Fits Mercury Marine 4-85 HP Inline Engines (Replaces 1399-3938)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eFuel Filter – Fits Mercury Marine 4-85 HP Inline Engines (Replaces 1399-3938)\u003c\/strong\u003e is designed for a wide range of Mercury Marine 2-stroke and 4-stroke inline engines from 4 HP to 85 HP, covering various years. It is also compatible with select Johnson\/Evinrude models requiring part #0509400.\u003c\/p\u003e\n\u003cp\u003eIt directly replaces Mercury parts 1399-3938, 399-39380, 1754, and 3938, as well as Sierra 18-7832 and Johnson\/Evinrude 0509400.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for inline installation on carbureted engines.\u003c\/li\u003e\n\u003cli\u003eSpecifically engineered for use with side bowl carburetors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\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\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\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\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\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e399-39380\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1754\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e3938\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-7832\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e0509400\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercury Marine, this filter fits a broad range of 2-stroke models from 4 HP up to 150 HP across various years. Please verify your specific model and OEM part number.\u003c\/p\u003e\n\u003cp\u003eFor Johnson\/Evinrude, compatibility is based on the OEM part number cross-reference (0509400). Specific models are not detailed; please verify your part number before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4 (1 CYL. PRODUCT OF USA)\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1986\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 10\/10A\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 15A\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 25\/25E\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 28\/28A\/28AD\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 30H\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e350\/MARK 35A\u003c\/td\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e400\/402\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e450\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–Various\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 55\/55E\/55H\/55AE\/55AM\u003c\/td\u003e\n\u003ctd\u003e55\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 58E\/58AE\u003c\/td\u003e\n\u003ctd\u003e58\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e650 (3 Cyl\/4 Cyl)\u003c\/td\u003e\n\u003ctd\u003e65\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1967–1975\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eMARK 75\/75A\/MARK 78\/78A\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e700\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e800\/800 80\u003c\/td\u003e\n\u003ctd\u003e80\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e850\u003c\/td\u003e\n\u003ctd\u003e85\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e900\u003c\/td\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e950\u003c\/td\u003e\n\u003ctd\u003e95\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1000\/1000SS\/1000BP\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1100\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1150\u003c\/td\u003e\n\u003ctd\u003e115\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1973–1985\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1250\/1250BP\u003c\/td\u003e\n\u003ctd\u003e125\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1350\u003c\/td\u003e\n\u003ctd\u003e135\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1400\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e1500\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1973–1985\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e100, 150, 200, 250\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e300 350\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e1399-3938\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003eVarious Models\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0509400\u003c\/td\u003e\n\u003ctd\u003eCross-reference provided but specific models not detailed\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eInline Fuel Filter\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eInline, carbureted engines\u003c\/dd\u003e\n\u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n\u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eInline\u003c\/dd\u003e\n\u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e5.56\" H x 1.88\" W x 1.31\" L\u003c\/dd\u003e\n\u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor use with side bowl carburetors\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1\u003c\/span\u003e x Fuel Filter (1399-3938)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eShut off the fuel supply to the engine and place a suitable container underneath the work area to catch any fuel spillage.\u003c\/li\u003e\n\u003cli\u003eCarefully locate the existing inline fuel filter. Loosen the clamps securing the fuel lines to both ends of the old filter.\u003c\/li\u003e\n\u003cli\u003eGently twist and pull the fuel lines off the filter. Be prepared for a small amount of residual fuel to drain out.\u003c\/li\u003e\n\u003cli\u003eNote the fuel flow direction arrow on the new filter. Install it so the arrow points toward the engine's carburetor.\u003c\/li\u003e\n\u003cli\u003eSlide the fuel lines onto the new filter and securely fasten the clamps. Ensure they are snug to prevent leaks.\u003c\/li\u003e\n\u003cli\u003eTurn the fuel supply back on and prime the engine if necessary. Thoroughly inspect the filter and connections for any signs of leaks before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this fuel filter will fit my engine?\u003c\/summary\u003e\u003cp\u003eThis filter is designed for a wide array of Mercury inline engines (4-85+ HP) and select Johnson\/Evinrude models. The most reliable way to confirm fitment is to match your existing part number to one of the cross-references: Mercury 1399-3938, Sierra 18-7832, or Johnson\/Evinrude 0509400. Also, check the detailed compatibility table for your specific model.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a clogged or failing fuel filter?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include the engine sputtering or bogging down during acceleration, difficulty starting, rough idling, or a noticeable loss of overall power. In some cases, the engine may stall and refuse to restart. Visual inspection might reveal debris inside the filter if it has a clear housing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the recommended replacement interval for this filter?\u003c\/summary\u003e\u003cp\u003eFor optimal engine health and performance, we recommend replacing your inline fuel filter at least once per season or every 100 hours of operation, whichever comes first. Consult your engine’s service manual for manufacturer-specific recommendations.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this filter for fuel-injected (EFI) or carbureted engines?\u003c\/summary\u003e\u003cp\u003eThis is an inline filter specifically designed for carbureted engines. It is particularly noted for use with systems that have a side bowl carburetor. It is not suitable for high-pressure fuel-injected (EFI\/DFI) systems.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602603741499,"sku":"1399-3938","price":15.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/1399-3938_4f353e1f-30dc-4dd1-aa81-33532441ddad.jpg?v=1758594959"},{"product_id":"water-pump-impeller-fits-mercury-mariner-4-9-8-hp-outboards-replaces-47-89981","title":"Water Pump Impeller – Fits Mercury\/Mariner 4–9.8 HP Outboards (Replaces 47-89981)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\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\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003eWater Pump Impeller – Fits Mercury\/Mariner 4–9.8 HP Outboards (Replaces 47-89981)\u003c\/strong\u003e is designed for Mercury and Mariner 2-stroke outboard models from 3.9 HP to 10 HP (1965–1986) with an 11.60 mm shaft diameter. It ensures reliable engine cooling and performance.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Mercury 47-89981, Sierra 18-3039, GLM 12270, CEF 500314, and Mallory 9-45305.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered as a direct-fit replacement for specified models.\u003c\/li\u003e\n\u003cli\u003eConstructed with a durable brass hub and neoprene blades.\u003c\/li\u003e\n\u003cli\u003eNote: This part is not compatible with 5 HP Mercury Mariner engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\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\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3039\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e12270\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500314\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-45305\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\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e39 1-Cylinder\u003c\/td\u003e\n \u003ctd\u003e3.9\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 2278851 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 (4 HP) 1-Cylinder\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 2278851 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e4 HP 1-Cylinder USA\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e45, 4.5 1-Cylinder\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 (6HP)\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 1916139 thru 2529894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e7.5 HP\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e75 (7.5HP)\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e9.8 HP\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e110 (10hp)\u003c\/td\u003e\n \u003ctd\u003e10\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1965–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 1865779 and up\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\u003eWater Pump Impeller\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect-fit replacement\u003c\/dd\u003e\n \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eBrass Hub with Neoprene Blades\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eHeight: 14.40 mm (0.57\"), External Diameter: 32.00 mm (1.26\"), Internal Shaft Diameter: 11.60 mm (0.456\")\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e11 g (0.39 oz)\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eManufacturer warranty may apply\u003c\/dd\u003e\n \u003cdt\u003eOther Attributes\u003c\/dt\u003e\n\u003cdd\u003eNot compatible with 5 HP Mercury Mariner engines\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 Water Pump Impeller (47-89981)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and remove the engine cover.\u003c\/li\u003e\n\u003cli\u003eDrain the lower unit gear lube.\u003c\/li\u003e\n\u003cli\u003eRemove the bolts securing the lower unit (gearcase) to the upper driveshaft housing.\u003c\/li\u003e\n\u003cli\u003eGently separate the lower unit from the upper housing. Be mindful of the shift shaft.\u003c\/li\u003e\n\u003cli\u003eLocate and unbolt the water pump housing.\u003c\/li\u003e\n\u003cli\u003eSlide the old impeller off the driveshaft, noting the keyway alignment.\u003c\/li\u003e\n\u003cli\u003eClean the housing and inspect for wear or damage. Lightly grease the new impeller and interior of the housing.\u003c\/li\u003e\n\u003cli\u003eInstall the new impeller onto the driveshaft, ensuring the key is in place and the blades are oriented correctly (typically bent in the direction of shaft rotation).\u003c\/li\u003e\n\u003cli\u003eReassemble the water pump housing, reattach the lower unit, and refill the gear lube with the correct type and amount.\u003c\/li\u003e\n\u003cli\u003eTest the engine in water, confirming a steady stream from the tell-tale port.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this impeller fits my specific engine?\u003c\/summary\u003e\u003cp\u003eThis impeller fits a wide range of Mercury\/Mariner 2-stroke outboards from 3.9 to 9.8 HP made between 1965 and 1986. Please check the \"Engine \u0026amp; Model Compatibility\" table and verify your engine's model, horsepower, and serial number range. Crucially, this part is NOT for 5 HP models.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon signs include a weak or non-existent water stream from the \"tell-tale\" outlet, engine overheating alerts or steam, and reduced engine performance. An impeller should be inspected regularly and replaced as part of routine maintenance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my impeller?\u003c\/summary\u003e\u003cp\u003eFor preventative maintenance, it's recommended to replace the impeller every 1-2 years or every 100-200 hours of use, whichever comes first. Frequency should increase if operating in saltwater or sandy\/silty conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this include the housing or gaskets?\u003c\/summary\u003e\u003cp\u003eNo, this listing is for the impeller only, as shown in the \"What's in the Box\" section. It does not include the full water pump kit with housing, wear plate, or gaskets.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM or aftermarket part?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement part, not an original equipment manufacturer (OEM) component. It is engineered to meet or exceed OEM specifications using comparable materials and is manufactured in an ISO 9001 certified facility, with batch inspections for quality control.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow much is shipping and how fast is it?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and costs will be presented at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use conditions. Should you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard return window for items that are unused and in their original condition. See our full policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717909254459,"sku":"17IM003KOC","price":18.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IM003KOC.png?v=1762938183"},{"product_id":"water-pump-impeller-fits-mercury-marine-4-9-8-hp-2-stroke-outboards-replaces-47-89981","title":"Water Pump Impeller – Fits Mercury Marine 4-9.8 HP 2-Stroke Outboards (Replaces 47-89981)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\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\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\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\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis high-quality \u003cstrong\u003eWater Pump Impeller – Fits Mercury Marine 4-9.8 HP 2-Stroke Outboards (Replaces 47-89981)\u003c\/strong\u003e is an aftermarket component engineered for a direct fit on various Mercury Marine 2-Stroke outboard motors, including 4, 4.5, 6, 7.5, and 9.8 HP models. It is designed to restore cooling system performance and prevent engine overheating.\u003c\/p\u003e\n \u003cp\u003eThis part serves as a direct cross-reference for several part numbers, including Sierra 18-3039, Mercury 47-89981, Mercury 47-65957, Mercury 47-39074, CEF 500314, and GLM 12270.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eInstalls directly into the water pump housing.\u003c\/li\u003e\n \u003cli\u003eConstructed from durable neoprene with a brass hub for reliable service.\u003c\/li\u003e\n \u003cli\u003eFeatures 6 blades for efficient water circulation.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\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\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3039\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-65957\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-39074\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500314\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e12270\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\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n \u003cp\u003eFor Mercury\/Mariner engines, this impeller fits a specific range of 1- and 2-cylinder models. Please check your engine's serial number and original part number to ensure a correct match.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e1-Cylinder\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 2278851 and up, USA models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e1-Cylinder\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 (4 HP)\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 2278851 and up, 1-Cylinder\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e45, 4.5\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003e1-Cylinder\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e60 (6 HP)\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 1916139 thru 2529894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e7.5 HP\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e75 (7.5 HP)\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e9.8 HP\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eInside diameter 0.456 inch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e110 (10 HP)\u003c\/td\u003e\n \u003ctd\u003e10\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-89981\u003c\/td\u003e\n \u003ctd\u003eSerial number 1865779 and up\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\u003eWater Pump Impeller\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement in water pump housing\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene with Brass Hub\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eHeight: 14.40 mm, Overall Diameter: 32.00 mm, Shaft Diameter: 11.60 mm\u003c\/dd\u003e\n \u003cdt\u003eInternal Diameter\u003c\/dt\u003e\n\u003cdd\u003e0.456 inch (11.58 mm)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e11 g (0.458 oz)\u003c\/dd\u003e\n \u003cdt\u003eEngine Type\u003c\/dt\u003e\n\u003cdd\u003e2-Stroke\u003c\/dd\u003e\n \u003cdt\u003eCompatibility\u003c\/dt\u003e\n\u003cdd\u003eNot compatible with 5 HP Mercury Mariner engines\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 Water Pump Impeller (47-89981)\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the spark plug leads and the battery for safety.\u003c\/li\u003e\n \u003cli\u003eDrain the gearcase oil from the lower unit.\u003c\/li\u003e\n \u003cli\u003eUnbolt and carefully detach the lower unit from the engine's midsection.\u003c\/li\u003e\n \u003cli\u003eLocate and unbolt the water pump housing cover.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller, paying attention to its rotational direction. Clean any debris from the housing.\u003c\/li\u003e\n \u003cli\u003eLightly lubricate the new impeller and the inside of the housing with a marine-safe lubricant.\u003c\/li\u003e\n \u003cli\u003eInstall the new impeller by pushing down while turning the driveshaft in the direction of engine rotation to bend the blades correctly.\u003c\/li\u003e\n \u003cli\u003eReinstall the water pump housing and torque its bolts to the manufacturer's specification.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit, ensuring the driveshaft, shift shaft, and water tube are aligned.\u003c\/li\u003e\n \u003cli\u003eRefill the lower unit with fresh gear oil before starting the engine.\u003c\/li\u003e\n \u003c\/ol\u003e\n\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWill this impeller fit my 5 HP Mercury engine?\u003c\/summary\u003e\n \u003cp\u003eNo, this impeller has an internal diameter of 0.456\" and is specifically noted as not compatible with 5 HP Mercury Mariner engines. Always verify your part number and engine specifications before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow can I confirm this part fits my motor?\u003c\/summary\u003e\n \u003cp\u003eThe best way is to compare your existing impeller's part number and dimensions to those listed here. Check the compatibility table for your engine model, HP, and serial number range. When in doubt, consult your engine's service manual.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing impeller?\u003c\/summary\u003e\n \u003cp\u003eCommon signs of a worn or damaged impeller include the engine overheating at idle or low speeds, a weak or non-existent water stream from the \"tell-tale\" cooling outlet, and finding brittle, cracked, or broken blades during inspection.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my impeller?\u003c\/summary\u003e\n \u003cp\u003eFor preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1 to 2 years (or 100-200 hours of use), especially if operating in saltwater or sandy\/silty conditions.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency and quality.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the shipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most regions; expedited options will appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n \u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717909287227,"sku":"XV-1ZVG-PA5L","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/XV-1ZVG-PA5L.png?v=1762938184"},{"product_id":"inline-fuel-filter-fits-mercury-tohatsu-nissan-4-30hp-outboards-replaces-35-16248-369-02230-0","title":"Inline Fuel Filter for Mercury, Mariner, Tohatsu and Nissan Outboards — Replaces Mercury 35-16248 and Tohatsu\/Nissan 369-02230-0","description":"\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; 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\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eInline Fuel Filter\u003c\/strong\u003e is a single replacement filter for selected Mercury, Mariner, Tohatsu, and Nissan outboard fuel systems. It helps screen contaminants from the fuel supply before they reach the engine. The translucent housing makes it possible to check fuel flow and visible debris during routine maintenance.\u003c\/p\u003e\n \u003cp\u003eFor Mercury and Mariner applications, it replaces part number \u003cstrong\u003e35-16248\u003c\/strong\u003e. The corresponding Tohatsu\/Nissan fuel-filter reference is \u003cstrong\u003e369-02230-0\u003c\/strong\u003e, also written as \u003cstrong\u003e369022300M\u003c\/strong\u003e in some parts systems. Always compare the part number, hose connection, and engine application before installation.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eSingle inline fuel filter for gasoline outboard fuel systems.\u003c\/li\u003e\n \u003cli\u003eInstalls in the fuel hose under the engine cowl or at the listed fuel-system location.\u003c\/li\u003e\n \u003cli\u003eTranslucent housing allows a quick visual check of fuel and contamination.\u003c\/li\u003e\n \u003cli\u003eSuitable for the specific applications and model families listed below; model, year, stroke, and serial conditions must be confirmed.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eThese are reference numbers associated with the listed replacement applications. They are not the internal product identifier.\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\u003c\/th\u003e\n\u003cth\u003eReference Part 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\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003ctd\u003eFuel filter assembly reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e369022300M\u003c\/td\u003e\n\u003ctd\u003eAlternate formatting used in parts listings\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eCompatibility is application-specific. Confirm the exact model designation, year, stroke type, serial range where applicable, and the reference number on your original filter before ordering.\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\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or Application\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear \/ Condition\u003c\/th\u003e\n\u003cth\u003eReference No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 2-cylinder outboards\u003c\/td\u003e\n\u003ctd\u003e4–5 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e4–6 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e8–9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–1998\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e15 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM4C \/ M5B\u003c\/td\u003e\n\u003ctd\u003e4–5 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM6B \/ M8B \/ M9.8B\u003c\/td\u003e\n\u003ctd\u003e6–9.8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS4 \/ MFS5 \/ MFS6C\u003c\/td\u003e\n\u003ctd\u003e4–6 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS8 \/ MFS9.8A3 and related MFS8–MFS9.8 models\u003c\/td\u003e\n\u003ctd\u003e8–9.8 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.9 \/ MFS15 \/ MFS20C or MFS20D\u003c\/td\u003e\n\u003ctd\u003e9.9–20 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\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 confirms the Tohatsu model families and applications shown above. It does not establish blanket compatibility with every 4–30 HP Mercury, Tohatsu, or Nissan outboard. Do not rely on horsepower alone.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eInline fuel filter\u003c\/dd\u003e\n \u003cdt\u003eProduct Format\u003c\/dt\u003e\n\u003cdd\u003eSingle replacement filter\u003c\/dd\u003e\n \u003cdt\u003eFuel System\u003c\/dt\u003e\n\u003cdd\u003eGasoline outboard fuel system\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eInstalled inline with the fuel hose at the applicable engine fuel-system location\u003c\/dd\u003e\n \u003cdt\u003eHousing\u003c\/dt\u003e\n\u003cdd\u003eTranslucent plastic housing\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eVerify hose size and connection dimensions against the original filter before installation\u003c\/dd\u003e\n \u003cdt\u003eMercury \/ Mariner Reference\u003c\/dt\u003e\n\u003cdd\u003e35-16248\u003c\/dd\u003e\n \u003cdt\u003eTohatsu \/ Nissan Reference\u003c\/dt\u003e\n\u003cdd\u003e369-02230-0; alternate format 369022300M\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Inline Fuel Filter\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eNo hose clamps, fuel hose, primer bulb, or other fuel-system components are included unless specifically shown in the order details.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eTurn the engine off, allow it to cool, and work in a well-ventilated area away from ignition sources.\u003c\/li\u003e\n \u003cli\u003eClose or disconnect the fuel supply as appropriate for your engine and keep absorbent material ready for spilled fuel.\u003c\/li\u003e\n \u003cli\u003eLocate the existing filter and note the direction of fuel flow indicated by the arrow on the filter.\u003c\/li\u003e\n \u003cli\u003eRemove the hose clamps and carefully disconnect the fuel lines from the old filter.\u003c\/li\u003e\n \u003cli\u003eInstall the replacement filter with the flow arrow pointing toward the engine.\u003c\/li\u003e\n \u003cli\u003eSecure the fuel lines with suitable clamps and check that the connections are fully seated.\u003c\/li\u003e\n \u003cli\u003ePrime the fuel system according to the engine manufacturer's procedure.\u003c\/li\u003e\n \u003cli\u003eInspect the filter and both connections for fuel leaks before starting the engine.\u003c\/li\u003e\n \u003cli\u003eDo not operate the engine if leakage, damaged hose, loose clamps, or an incorrect connection is found.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this filter fits my engine?\u003c\/summary\u003e\n \u003cp\u003eMatch your original filter's reference number and compare the exact engine model, year, stroke type, and hose connection with the compatibility information above. The listed references are Mercury\/Mariner 35-16248 and Tohatsu\/Nissan 369-02230-0 or 369022300M.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDoes this fit every Mercury, Tohatsu, Nissan, or Mariner outboard from 4 to 30 HP?\u003c\/summary\u003e\n \u003cp\u003eNo blanket 4–30 HP fitment should be assumed. The confirmed applications in the available catalog evidence are narrower, particularly for Mercury\/Mariner and Tohatsu models. Check the exact application and original part number before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a restricted fuel filter?\u003c\/summary\u003e\n \u003cp\u003ePossible symptoms include hard starting, stalling, hesitation, reduced acceleration, or loss of power. Inspect the filter and the rest of the fuel system before replacing parts, since similar symptoms can have other causes.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I install the filter in either direction?\u003c\/summary\u003e\n \u003cp\u003eNo. Install it in the direction of fuel flow, with the arrow pointing toward the engine. A reversed filter may restrict fuel delivery.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this an OEM filter?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement filter. Mercury, Mariner, Tohatsu, and Nissan names and part numbers are used only to identify reference applications and compatibility.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat should I do if the connection does not match?\u003c\/summary\u003e\n \u003cp\u003eDo not force the filter or stretch the hose over an unsuitable connection. Stop installation and verify the part number, hose size, flow direction, and engine application.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eFuel is flammable. Work in a well-ventilated area and keep the filter away from flames, sparks, and hot surfaces.\u003c\/li\u003e\n \u003cli\u003eVerify the part number and physical connections before installation.\u003c\/li\u003e\n \u003cli\u003eInspect the fuel hose and clamps whenever the filter is replaced.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not familiar with marine fuel systems.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eMarine replacement parts selected for practical maintenance and repair applications.\u003c\/li\u003e\n \u003cli\u003eClear reference-number and fitment information to help customers compare replacement parts.\u003c\/li\u003e\n \u003cli\u003eSupport for choosing the correct component based on the engine model and original part number.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270554427,"sku":"12111055-fys","price":20.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12111055-fys.png?v=1762958709"},{"product_id":"fuel-line-connector-fits-mercury-mariner-4-40-hp-replaces-22-13563q7-13563a7-13563t7","title":"Aftermarket Fuel Line Connector, Female Tank End – For 5\/16 in (8 mm) Hose, Mercury\/Mariner Applications","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003efemale fuel line connector\u003c\/strong\u003e is intended for the fuel-tank end of compatible Mercury and Mariner outboard fuel line assemblies. It provides a quick-disconnect connection for applications using a 5\/16 in (8 mm) fuel hose and a compatible male tank fitting.\u003c\/p\u003e\n\u003cp\u003eBecause connector designs can vary by engine, fuel tank, hose size, and serial-number range, compare the original connector and the applicable part references before ordering. The connector should be used only where the original assembly has the same tank-end connection style and hose size.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation position:\u003c\/strong\u003e Female quick-disconnect connector at the fuel-tank end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose size:\u003c\/strong\u003e 5\/16 in (8 mm); verify against the existing hose before purchase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection style:\u003c\/strong\u003e Clip-on quick disconnect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Compatible Mercury and Mariner fuel line assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMating connection:\u003c\/strong\u003e Compatible male tank fitting; some listings reference 18-80402, but verify the fitting on your tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are commonly listed as reference or interchange numbers for this connector style. They are provided for identification only and do not replace checking the connector shape, hose size, and fuel-tank fitting.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eReference Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e22-13563Q7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e22-13563A7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e22-13563T7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-8091\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-38011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAttwood\u003c\/td\u003e\n\u003ctd\u003e8890LP6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScepter\u003c\/td\u003e\n\u003ctd\u003e05793\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eCompatibility Information\u003c\/h2\u003e\n\u003cp\u003eThis connector is intended for compatible Mercury and Mariner applications that use the corresponding female tank-end quick-disconnect and a 5\/16 in (8 mm) fuel hose. Do not assume compatibility solely from engine horsepower, model family, or brand. Confirm the original connector, hose diameter, tank fitting, and any applicable model or serial-number requirements.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Compatibility Information\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eConnector Position\u003c\/th\u003e\n\u003cth\u003eHose Size\u003c\/th\u003e\n\u003cth\u003eVerification Required\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eCompatible outboard fuel line assemblies\u003c\/td\u003e\n\u003ctd\u003eFemale tank end\u003c\/td\u003e\n\u003ctd\u003e5\/16 in (8 mm)\u003c\/td\u003e\n\u003ctd\u003eCompare original connector and tank fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eCompatible outboard fuel line assemblies\u003c\/td\u003e\n\u003ctd\u003eFemale tank end\u003c\/td\u003e\n\u003ctd\u003e5\/16 in (8 mm)\u003c\/td\u003e\n\u003ctd\u003eCompare original connector and tank fitting\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 reference information available for this listing does not establish one universal fitment range for every Mercury or Mariner engine year, horsepower rating, stroke type, or serial-number range. Check the exact application before installation.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eQuick-disconnect fuel line connector\u003c\/dd\u003e\n\u003cdt\u003eInstallation Position\u003c\/dt\u003e\n\u003cdd\u003eFemale fuel-tank end\u003c\/dd\u003e\n\u003cdt\u003eFuel System\u003c\/dt\u003e\n\u003cdd\u003eGasoline fuel line application\u003c\/dd\u003e\n\u003cdt\u003eCompatible Hose Size\u003c\/dt\u003e\n\u003cdd\u003e5\/16 in (8 mm), subject to verification\u003c\/dd\u003e\n\u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eClip-on quick disconnect\u003c\/dd\u003e\n\u003cdt\u003eThread Size\u003c\/dt\u003e\n\u003cdd\u003eNot applicable to the clip-on connector body\u003c\/dd\u003e\n\u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eAftermarket plastic connector body; material details may vary by supplier\u003c\/dd\u003e\n\u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eTypically black; confirm against the supplied product\u003c\/dd\u003e\n\u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eVerify connector dimensions and orientation against the original part\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Female fuel line connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHose, hose clamps, fuel tank fittings, primer bulbs, and other fuel-line components are not included unless specifically stated in the order details.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the engine, remove ignition sources, and work in a well-ventilated area.\u003c\/li\u003e\n\u003cli\u003eAllow the engine and fuel system to cool before beginning work.\u003c\/li\u003e\n\u003cli\u003eRelieve fuel-system pressure according to the engine manufacturer's procedure and keep absorbent material available for residual fuel.\u003c\/li\u003e\n\u003cli\u003eDisconnect the old connector from the fuel tank and remove the hose clamp or retaining hardware.\u003c\/li\u003e\n\u003cli\u003eConfirm that the replacement connector matches the original connector and that the hose is 5\/16 in (8 mm) where applicable.\u003c\/li\u003e\n\u003cli\u003eInstall the connector onto the hose using a suitable fuel-line clamp. Do not damage, split, or excessively stretch the hose.\u003c\/li\u003e\n\u003cli\u003eAttach the connector to the compatible male tank fitting until it is fully seated and retained.\u003c\/li\u003e\n\u003cli\u003ePrime the fuel system according to the engine manufacturer's instructions and inspect the connection carefully for leaks before operating the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFollow all applicable marine fuel-system safety requirements. If the hose, connector, or tank fitting is cracked, brittle, distorted, or leaking, replace the damaged component before use.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow can I confirm that this is the correct connector?\u003c\/summary\u003e\n\u003cp\u003eCompare the old connector's shape, female tank-end configuration, retaining clip, hose connection, and hose diameter. Also compare the applicable manufacturer reference number. Engine brand or horsepower alone is not sufficient to confirm fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this the tank-end or engine-end connector?\u003c\/summary\u003e\n\u003cp\u003eThis listing describes a female connector for the fuel-tank end of the fuel line. Engine-end connectors may use a different design and should not be substituted without confirming the connection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this connector fit a 3\/8 in hose?\u003c\/summary\u003e\n\u003cp\u003eThe listed application is for a 5\/16 in (8 mm) hose. Do not install it on a 3\/8 in hose unless the connector specifications and hose connection have been independently confirmed for that application.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use the listed reference numbers as the only fitment check?\u003c\/summary\u003e\n\u003cp\u003eNo. Reference numbers can help identify a replacement, but connector configuration, hose size, tank fitting, model details, and serial-number conditions should also be checked before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are common signs that a fuel connector needs replacement?\u003c\/summary\u003e\n\u003cp\u003eFuel odor, wetness or leakage around the connection, difficulty priming the fuel system, hard starting, engine stalling, cracks, brittleness, or a connector that does not lock securely are all reasons to stop using the component and inspect the fuel system.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this an OEM connector?\u003c\/summary\u003e\n\u003cp\u003eThis listing is for an aftermarket replacement connector. It is not represented as a genuine Mercury or Mariner component.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the original connector, hose size, tank fitting, and application details before ordering.\u003c\/li\u003e\n\u003cli\u003eNever operate an engine with a fuel leak or a connector that does not lock securely.\u003c\/li\u003e\n\u003cli\u003eUse only fuel-system-compatible hose clamps and components.\u003c\/li\u003e\n\u003cli\u003eKeep fuel away from flames, sparks, hot surfaces, and other ignition sources.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when the fuel system, hose, or tank fitting is damaged or difficult to access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Replacement components for a range of boating and outboard applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication-Focused Product Information\u003c\/strong\u003e — Compare part references and physical connection details before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport When Needed\u003c\/strong\u003e — Contact support with your original connector photos, hose size, and engine or tank information if application assistance is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003cstyle\u003e\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\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@media (max-width:480px) { table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718272553275,"sku":"22FC014R","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/22FC014R.png?v=1762958784"},{"product_id":"carburetor-repair-kit-fits-yamaha-3-8hp-tohatsu-nissan-4-5hp-mercury-6-8hp-replaces-6g1-w0093-00-369-87122-1","title":"Carburetor Repair Kit for Yamaha 3–8 HP, Mercury 6–8 HP, and Tohatsu\/Nissan 4–9.8 HP 2-Stroke Outboards","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ecarburetor repair kit\u003c\/strong\u003e is designed to restore fuel-system performance on compatible small 2-stroke outboard engines. It replaces commonly listed carburetor repair-kit references used on selected Yamaha 3 HP, 6 HP, and 8 HP models, as well as compatible Mercury Marine, Tohatsu, and Nissan outboards.\u003c\/p\u003e\n\u003cp\u003eThe kit is intended for carburetor service when worn gaskets, seals, float components, or the needle valve contribute to hard starting, rough idle, fuel leakage, stalling, or poor acceleration. Always compare the carburetor configuration and manufacturer part number before ordering; horsepower alone does not confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eAftermarket replacement carburetor repair kit for compatible 2-stroke outboards.\u003c\/li\u003e\n \u003cli\u003eHelps renew the float and needle-valve system, seals, gaskets, and related service components.\u003c\/li\u003e\n \u003cli\u003eDesigned for installation in the original carburetor after disassembly and cleaning.\u003c\/li\u003e\n \u003cli\u003eDoes not include brass main or pilot jets unless specifically listed in the package contents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eThese references are used to identify compatible applications. They are not all interchangeable across every engine model, year, or carburetor configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or Supplier\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e11502M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6G1-W0093-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6G1-W0093-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6G1-14301-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e369-87122-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3B2-87122-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-7765\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-37505\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 applications below summarize catalog and reference-number coverage. Confirm the exact model code, production year, serial-number range where applicable, and the number stamped on the original carburetor 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\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eHorsepower\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eFitment Note\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eSelected 3 HP models, including 3LG and 3SG applications\u003c\/td\u003e\n\u003ctd\u003e3 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e6G1-W0093-00-00\u003c\/td\u003e\n\u003ctd\u003eCatalog occurrences include 1988 applications; verify the exact model code.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eSelected 6 HP models, including 6LG and 6SG applications\u003c\/td\u003e\n\u003ctd\u003e6 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e6G1-W0093-00-00\u003c\/td\u003e\n\u003ctd\u003eCatalog occurrences include 1988 applications; verify year and carburetor configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eSelected 8 HP models, including 8LK, 8LN, 8SK, and 8SN applications\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e6G1-W0093-00-00\u003c\/td\u003e\n\u003ctd\u003eCatalog occurrences include 1984–1985 applications; verify the original reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eAdditional selected 3 HP, 6 HP, and 8 HP 2-stroke applications\u003c\/td\u003e\n\u003ctd\u003e3–8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e6G1-W0093-00 \/ 6G1-W0093-00-00\u003c\/td\u003e\n\u003ctd\u003eReference-number match is required; model and year ranges vary.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003eSelected M4, M5, M8, M9.8, NS4, NS5, NS8, and NS9.8 applications\u003c\/td\u003e\n\u003ctd\u003e4–9.8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e369-87122-1 \/ 3B2-87122-0\u003c\/td\u003e\n\u003ctd\u003eConfirm the carburetor reference and physical configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003eSelected 6 HP and 8 HP 2-stroke applications\u003c\/td\u003e\n\u003ctd\u003e6–8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e11502M\u003c\/td\u003e\n\u003ctd\u003eApplication coverage is model-specific; verify the original carburetor number.\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 A listing in this table is not confirmation for every engine carrying the same horsepower rating. Different years, model variants, serial ranges, and carburetor revisions may use different repair kits.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCarburetor repair kit\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected small 2-stroke outboard engines\u003c\/dd\u003e\n \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\/oil mixture for 2-stroke engines\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eReplacement service parts for the original carburetor\u003c\/dd\u003e\n \u003cdt\u003eJets\u003c\/dt\u003e\n\u003cdd\u003eNot included unless specifically listed in the package contents\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Pilot screw\u003c\/li\u003e\n \u003cli\u003e1 × Carburetor cap\u003c\/li\u003e\n \u003cli\u003e1 × Carburetor gasket\u003c\/li\u003e\n \u003cli\u003e1 × Additional carburetor cap\u003c\/li\u003e\n \u003cli\u003e1 × O-ring\u003c\/li\u003e\n \u003cli\u003e4 × Screws with washers\u003c\/li\u003e\n \u003cli\u003e1 × Float\u003c\/li\u003e\n \u003cli\u003e1 × Needle valve\u003c\/li\u003e\n \u003cli\u003e1 × Float pin\u003c\/li\u003e\n \u003cli\u003e1 × Float-arm pin\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eComponent appearance and individual markings may vary slightly by production batch. Confirm the parts against the original carburetor before assembly.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the fuel supply and work in a well-ventilated area away from ignition sources.\u003c\/li\u003e\n \u003cli\u003eDrain fuel from the carburetor and remove it from the engine according to the service manual.\u003c\/li\u003e\n \u003cli\u003eDisassemble the carburetor on a clean work surface and keep the original parts organized for comparison.\u003c\/li\u003e\n \u003cli\u003eClean the metal body, jets, passages, and mating surfaces with appropriate carburetor cleaner. Do not enlarge jets or passages.\u003c\/li\u003e\n \u003cli\u003eInstall the replacement gasket, seals, float, needle valve, pins, caps, screws, and other listed components in their original positions.\u003c\/li\u003e\n \u003cli\u003eCheck and adjust float height according to the engine manufacturer’s service specifications.\u003c\/li\u003e\n \u003cli\u003eReinstall the carburetor, reconnect all fuel lines and linkages, and check for leaks before starting the engine.\u003c\/li\u003e\n \u003cli\u003eSet idle speed and mixture adjustments only as specified for the exact engine model.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCompare the engine brand, model code, year, serial-number range where applicable, carburetor shape, and original manufacturer part number. The reference number on the original carburetor is more reliable than horsepower alone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat symptoms indicate that a rebuild may be needed?\u003c\/summary\u003e\u003cp\u003eHard starting, rough or unstable idle, stalling, fuel leakage, flooding, poor acceleration, and inconsistent running can be caused by degraded gaskets, a worn float, contaminated passages, or a leaking needle valve. Other fuel or ignition problems can produce similar symptoms.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre main and pilot jets included?\u003c\/summary\u003e\u003cp\u003eNo brass jets are listed as included components. Jet sizes vary by engine model and calibration, so reuse the correct original jets or obtain replacements specified for your exact engine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy is float-height adjustment important?\u003c\/summary\u003e\u003cp\u003eThe float controls fuel level in the carburetor bowl. Incorrect float height can cause flooding, fuel starvation, unstable idle, or poor acceleration. Use the exact service-manual specification for your engine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM kit?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement kit. The manufacturer and reference numbers shown are provided for application identification and cross-reference purposes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need special tools?\u003c\/summary\u003e\u003cp\u003eMost installations require standard hand tools, carburetor cleaner, compressed air, and a clean work area. A service manual and a suitable float-height measuring method are recommended.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eWork only with the engine stopped, cool, and disconnected from the fuel supply.\u003c\/li\u003e\n \u003cli\u003eGasoline and carburetor cleaner are flammable. Follow all product and local safety instructions.\u003c\/li\u003e\n \u003cli\u003eDo not purchase based only on horsepower. Verify the exact engine and carburetor reference.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are unfamiliar with carburetor service.\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 Focus\u003c\/strong\u003e — Replacement components for common outboard maintenance and repair applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication Guidance\u003c\/strong\u003e — Use manufacturer references and original-part comparison to select the correct component.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eService-Ready Products\u003c\/strong\u003e — Parts are supplied for practical maintenance and repair work on compatible marine engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723963306299,"sku":"17CR010","price":16.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17CR010-1.jpg?v=1763038491"},{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-3-5-9-8-hp-replaces-47-89980t1-89980q1","title":"Water Pump Housing Kit for Mercury\/Mariner 4, 4.5, 7.5 \u0026 9.8 HP 2-Stroke (1975–1985) – Replaces OEM 47-89980T1","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\u003eWater Pump Housing Kit\u003c\/strong\u003e is a replacement water-pump service assembly for selected Mercury and Mariner 2-stroke outboards rated at 4, 4.5, 7.5, and 9.8 HP from 1975 through 1985. The kit is intended for applications using the 0.438-inch impeller inside diameter and the impeller associated with OEM reference 47-89980T1.\u003c\/p\u003e\n\u003cp\u003eThe catalog application identifies this configuration as a water pump housing kit that includes the housing-related service components needed to renew the pump assembly. Confirm the engine model, production year, existing housing, impeller dimensions, and OEM reference before ordering.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eComplete water pump housing kit for specified Mercury\/Mariner 2-stroke applications.\u003c\/li\u003e\n \u003cli\u003eDesigned for applications using a 0.438-inch impeller inside diameter.\u003c\/li\u003e\n \u003cli\u003eSupplied with the housing, impeller, wear plate, O-rings, and seal listed below.\u003c\/li\u003e\n \u003cli\u003eAftermarket replacement; not an original Mercury component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following reference to compare this kit with the applicable manufacturer part number.\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\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\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-89980T1\u003c\/td\u003e\n \u003ctd\u003eOEM application reference\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 must be confirmed against the exact engine model and year. The application information below is limited to the catalog range associated with OEM reference 47-89980T1.\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\u003eBrand\u003c\/th\u003e\n \u003cth\u003eEngine Type\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Reference\u003c\/th\u003e\n \u003cth\u003eApplication Note\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89980T1\u003c\/td\u003e\n \u003ctd\u003eUses 0.438-inch impeller inside diameter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89980T1\u003c\/td\u003e\n \u003ctd\u003eUses 0.438-inch impeller inside diameter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89980T1\u003c\/td\u003e\n \u003ctd\u003eUses 0.438-inch impeller inside diameter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89980T1\u003c\/td\u003e\n \u003ctd\u003eUses 0.438-inch impeller inside diameter\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\u003eWater pump housing kit\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n \u003cdd\u003eMercury\/Mariner 2-stroke outboards\u003c\/dd\u003e\n \u003cdt\u003eRated Horsepower\u003c\/dt\u003e\n \u003cdd\u003e4, 4.5, 7.5, and 9.8 HP\u003c\/dd\u003e\n \u003cdt\u003eApplication Years\u003c\/dt\u003e\n \u003cdd\u003e1975–1985\u003c\/dd\u003e\n \u003cdt\u003eImpeller Inside Diameter\u003c\/dt\u003e\n \u003cdd\u003e0.438 inch\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eReplacement water pump service assembly\u003c\/dd\u003e\n \u003cdt\u003ePart Status\u003c\/dt\u003e\n \u003cdd\u003eAftermarket replacement, not OEM\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 Water pump sleeve\u003c\/li\u003e\n \u003cli\u003e1 x Water pump impeller\u003c\/li\u003e\n \u003cli\u003e1 x Wear plate\u003c\/li\u003e\n \u003cli\u003e1 x O-ring\u003c\/li\u003e\n \u003cli\u003e1 x O-ring\u003c\/li\u003e\n \u003cli\u003e1 x Water pump seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eComponent identifiers may vary by production batch or packaging. Compare the supplied parts with the removed assembly before installation.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the spark plug leads before servicing the outboard.\u003c\/li\u003e\n \u003cli\u003ePlace a drain pan beneath the gearcase and drain the lower-unit lubricant according to the service manual.\u003c\/li\u003e\n \u003cli\u003eRemove the fasteners securing the gearcase to the midsection, then lower the gearcase carefully.\u003c\/li\u003e\n \u003cli\u003eRemove the water pump housing and note the orientation of the impeller, key, wear plate, seals, and gaskets.\u003c\/li\u003e\n \u003cli\u003eClean the mating surfaces and remove old gasket material, corrosion, and debris.\u003c\/li\u003e\n \u003cli\u003eInstall the supplied wear plate, seals, O-rings, and related pump components in the same orientation as the original assembly.\u003c\/li\u003e\n \u003cli\u003eInstall the impeller on the driveshaft with the drive key correctly positioned. Lubricate the pump components as recommended by the engine service manual.\u003c\/li\u003e\n \u003cli\u003eReinstall the housing and tighten its fasteners to the manufacturer's specified torque.\u003c\/li\u003e\n \u003cli\u003eReattach the gearcase and refill the lower unit with the correct lubricant.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in water or with an approved flushing device, then verify a steady cooling-water stream and check for leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this kit fits my engine?\u003c\/summary\u003e\n \u003cp\u003eConfirm that your outboard is a Mercury or Mariner 2-stroke rated at 4, 4.5, 7.5, or 9.8 HP, produced during 1975–1985, and that the existing water-pump application uses OEM reference 47-89980T1 and a 0.438-inch impeller inside diameter. The exact model designation and service-manual information should be checked before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an impeller-only kit?\u003c\/summary\u003e\n \u003cp\u003eNo. This listing is for a water pump housing kit. It includes the water-pump service components listed in the package contents rather than an impeller alone.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a worn water-pump assembly?\u003c\/summary\u003e\n \u003cp\u003ePossible symptoms include a weak or absent tell-tale stream, overheating, steam, reduced cooling-water flow, or visible damage to the impeller, housing, wear plate, or seals. Stop operation if the engine overheats and inspect the cooling system.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShould the impeller and housing be replaced together?\u003c\/summary\u003e\n \u003cp\u003eReplacing worn pump components together can help restore the intended sealing and pumping surfaces. Inspect the driveshaft key, housing, wear plate, seals, and mating surfaces during service and replace any damaged parts.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs anything else needed for installation?\u003c\/summary\u003e\n \u003cp\u003eDepending on the condition of the engine and the service procedure, additional items may be required, such as lower-unit lubricant, suitable marine lubricant, replacement fasteners, or gaskets not included in this package. Follow the engine manufacturer's service instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement kit intended for the stated application. The OEM number is provided only as an application reference.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the exact model, horsepower, stroke, year, OEM reference, and impeller dimensions before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard without an adequate water supply for cooling.\u003c\/li\u003e\n \u003cli\u003eUse the engine service manual for torque values, sealing procedures, gearcase removal, and final testing.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are unfamiliar with lower-unit or water-pump service.\u003c\/li\u003e\n \u003cli\u003eThis product is an aftermarket replacement and is not manufactured by Mercury or Mariner.\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 — Practical aftermarket components for routine marine service and repair.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Compatibility information is organized by engine type, horsepower, stroke, year, and reference number.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eService Support\u003c\/strong\u003e — Review the application details and compare the original assembly before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723963666747,"sku":"6Y-JF9V-8O9J","price":30.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/6Y-JF9V-8O9J.png?v=1763038507"},{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-3-9-9-8-hp-replaces-47-89980t1-47-89980q1","title":"Water Pump Impeller Kit for Mercury\/Mariner 3.5–9.8 HP 2-Stroke Outboards — Replaces 47-89980T1 and 47-89980Q1","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Kit\u003c\/strong\u003e is intended for selected Mercury and Mariner 2-stroke outboards from 3.5 to 9.8 HP. The listed applications cover models manufactured between 1975 and 1986 and require an impeller with a 0.438-inch hub diameter. Always confirm the complete engine model, production year, and serial number before ordering.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket replacement kit is listed for use in place of Mercury 47-89980T1 and 47-89980Q1, Sierra 18-3006, GLM 700-12271, and SEI 96-260-03AK references.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned as a direct replacement for the specified water-pump applications.\u003c\/li\u003e\n \u003cli\u003eNeoprene rubber impeller provides dependable water flow through the raw-water cooling system.\u003c\/li\u003e\n \u003cli\u003eKit includes the impeller, outer plate, key, guide sleeve, seal, and O-rings for a complete water-pump service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references together with your engine model and serial number to confirm compatibility.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89980Q1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e700-12271\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSEI\u003c\/td\u003e\n\u003ctd\u003e96-260-03AK\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\u003eThe applications below are the listed fitment range for this kit. Model, horsepower, stroke, year, manufacturing location, and serial range must be considered together. Do not rely on horsepower alone to confirm fitment.\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\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eModel 110\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in USA: Serial Range 5206550 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in USA: Serial Range 5206550 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in USA: Serial Range 5595532 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in USA: Serial Range 5595532–0A809600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e3.6\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eSerial Range 5404657 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eSerial Range 6202173 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eModel 110\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Australia: Serial Range 8057545 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Australia: Serial Range 8057545 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Australia: Serial Range 8068065 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Australia: Serial Range 8068065 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eModel 110\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Belgium: Serial Range 9217756 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Belgium: Serial Range 9217756 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Belgium: Serial Range 9258281 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Belgium: Serial Range 9258281–9477829\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eModel 110\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Canada: Serial Range 7125388 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Canada: Serial Range 7125388 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Canada: Serial Range 7147238 \u0026amp; Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e1-Cyl.\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003ctd\u003eMade in Canada: Serial Range 7143688 \u0026amp; Up\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\u003eWater pump impeller kit\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n\u003cdt\u003eImpeller ID\u003c\/dt\u003e\n\u003cdd\u003e0.438 in. (11.13 mm)\u003c\/dd\u003e\n\u003cdt\u003eImpeller OD\u003c\/dt\u003e\n\u003cdd\u003e1.26 in. (32 mm)\u003c\/dd\u003e\n\u003cdt\u003eImpeller Height\u003c\/dt\u003e\n\u003cdd\u003e0.57 in. (14.4 mm)\u003c\/dd\u003e\n\u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n\u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber impeller\u003c\/dd\u003e\n\u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n\u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003eUp to 105°C (221°F)\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eRaw-water cooling systems in the specified marine engines\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Water pump impeller, reference 47-89980\u003c\/li\u003e\n\u003cli\u003e1 × Cartridge outer plate, reference 46895\u003c\/li\u003e\n\u003cli\u003e1 × Woodruff impeller key\u003c\/li\u003e\n\u003cli\u003e1 × Water-inlet-tube guide sleeve\u003c\/li\u003e\n\u003cli\u003e1 × Seal\u003c\/li\u003e\n\u003cli\u003e2 × O-rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and remove the engine cover.\u003c\/li\u003e\n\u003cli\u003ePlace a drain pan under the lower unit and remove the gearcase oil drain screw to drain the oil.\u003c\/li\u003e\n\u003cli\u003eDisconnect the shift linkage and remove the bolts securing the lower unit to the engine.\u003c\/li\u003e\n\u003cli\u003eCarefully lower and remove the gearcase assembly.\u003c\/li\u003e\n\u003cli\u003eRemove the water-pump housing to access the impeller, and note the orientation of the original parts.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller, key, plate, and seals. Clean the mating surfaces thoroughly.\u003c\/li\u003e\n\u003cli\u003eInstall the replacement components in the reverse order of removal. Lightly lubricate the new impeller as appropriate for the installation.\u003c\/li\u003e\n\u003cli\u003eOrient the impeller blades correctly inside the housing, typically by turning the driveshaft clockwise while lowering the housing.\u003c\/li\u003e\n\u003cli\u003eReinstall the water-pump housing and tighten the fasteners to the engine manufacturer’s specifications.\u003c\/li\u003e\n\u003cli\u003eReassemble the lower unit, reconnect the shift linkage, and refill the gearcase oil.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery and test the engine in an appropriate water source to confirm proper water circulation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this impeller kit fits my engine?\u003c\/summary\u003e\u003cp\u003eConfirm that your engine is a listed Mercury or Mariner 2-stroke model in the 3.5–9.8 HP range, then match the model, year, manufacturing location, and serial number with the compatibility table. Also compare the original impeller and key arrangement before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or absent tell-tale stream, an overheating warning, or reduced engine performance. A worn impeller may have cracked, brittle, deformed, or missing blades.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace the water-pump impeller?\u003c\/summary\u003e\u003cp\u003eInspect the impeller regularly and replace it according to the engine manufacturer’s maintenance schedule. Frequent operation in sandy or silty water may require more frequent inspection and replacement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement kit listed for the referenced Mercury, Mariner, Sierra, GLM, and SEI applications. It is not manufactured by Mercury Marine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast is shipping?\u003c\/summary\u003e\u003cp\u003eTypical transit is 5–15 days. Standard shipping is free, and expedited options may be available at checkout depending on destination.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the warranty and return terms?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the applicable policy period for unused items in their original condition.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the engine model, year, serial number, original part, dimensions, and key arrangement before purchase.\u003c\/li\u003e\n\u003cli\u003eDo not install the part if the original component differs from the listed specifications or fitment details.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement part, not an original-equipment manufacturer component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when you are not familiar with lower-unit or water-pump service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts designed for demanding real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery is available to most regions, with typical transit of 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing supported by consistent materials and quality-control processes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723963699515,"sku":"20KM005-QM","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/20KM005-QM.png?v=1763038508"},{"product_id":"water-pump-impeller-repair-kit-fits-mercury-mariner-3-9-9-8-hp-replaces-46-92970a5-47-89980t1","title":"Water Pump Impeller Repair Kit – Fits Mercury\/Mariner 3.9–9.8 HP 2-Stroke Outboards (Replaces 46-92970A5, 47-89980T1)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ewater pump impeller repair kit\u003c\/strong\u003e is designed for selected Mercury and Mariner 2-stroke outboard engines rated at 3.9, 4, 4.5, 6, 7.5, and 9.8 HP. The listed applications cover model years from 1975 through 1986, subject to the model, market, and engine serial-number conditions shown below.\u003c\/p\u003e\n\u003cp\u003eThe kit replaces or cross-references Mercury part numbers \u003cstrong\u003e46-92970A5\u003c\/strong\u003e, \u003cstrong\u003e47-89980T1\u003c\/strong\u003e, and \u003cstrong\u003e47-89980Q1\u003c\/strong\u003e. It is intended for water-pump assemblies using a \u003cstrong\u003e0.438-inch (11.13 mm) impeller insert\u003c\/strong\u003e. Always compare the original water-pump assembly, impeller insert, and engine serial number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls in the lower-unit gearcase to restore water-pump and engine-cooling performance.\u003c\/li\u003e\n\u003cli\u003eIncludes a water-pump housing, cover assembly, face plate, impeller, cup insert, key, seals, O-rings, rubber ring, and washer.\u003c\/li\u003e\n\u003cli\u003eUses a marine-grade nylon PA66 housing and stainless-steel SS316 wear-plate and liner components as listed for this kit.\u003c\/li\u003e\n\u003cli\u003eThe 0.438-inch impeller insert size is a critical fitment dimension.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references to compare the replacement kit with the part number marked on the original water-pump assembly. Part-number references do not replace verification of engine model, year, market, serial number, and impeller dimensions.\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\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89980T1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89980Q1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eQuickMarine\u003c\/td\u003e\n\u003ctd\u003e92970A5\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\u003eThe following applications are listed for Mercury and Mariner 2-stroke outboards. Confirm the complete engine model and serial number before installation, because production-market and serial-number changes can affect water-pump fitment.\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\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e3.9\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eVerify the 0.438-inch impeller insert size.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1985 (USA)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial range: 5595532–0A809600.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986 (BEL)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial range: 9258281–9477829.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986 (CAN)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 7143688 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1986 (AUS)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 8068065 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985 (USA)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 5595532 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985 (BEL)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 9258281 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985 (CAN)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 7147238 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985 (AUS)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 8068065 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eVerify the 0.438-inch impeller insert size.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986 (USA)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 5206550 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986 (BEL)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 9217756 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986 (CAN)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 7125388 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986 (AUS)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 8057545 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985 (USA)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 5206550 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985 (BEL)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 9217756 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985 (CAN)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 7125388 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eOutboard\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1985 (AUS)\u003c\/td\u003e\n\u003ctd\u003e46-92970A5\u003c\/td\u003e\n\u003ctd\u003eSerial 8057545 and later.\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\u003eWater Pump Impeller Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected Mercury and Mariner 2-stroke outboard water-pump assemblies\u003c\/dd\u003e\n \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n\u003cdd\u003eLower-unit gearcase\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement, subject to model and serial-number verification\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade nylon PA66\u003c\/dd\u003e\n \u003cdt\u003eWear Plate and Liner Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel SS316\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eImpeller Insert Size\u003c\/dt\u003e\n\u003cdd\u003e0.438 inch (11.13 mm)\u003c\/dd\u003e\n \u003cdt\u003eApproximate Weight\u003c\/dt\u003e\n\u003cdd\u003e159 g (5.6 oz)\u003c\/dd\u003e\n \u003cdt\u003ePart Type\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Water-pump housing\u003c\/li\u003e\n \u003cli\u003e1 × Cover assembly\u003c\/li\u003e\n \u003cli\u003e1 × Face plate (wear plate)\u003c\/li\u003e\n \u003cli\u003e1 × Water-pump impeller\u003c\/li\u003e\n \u003cli\u003e1 × Cup insert\u003c\/li\u003e\n \u003cli\u003e1 × Woodruff impeller key\u003c\/li\u003e\n \u003cli\u003e1 × Seal\u003c\/li\u003e\n \u003cli\u003e2 × O-rings\u003c\/li\u003e\n \u003cli\u003e1 × Rubber ring\u003c\/li\u003e\n \u003cli\u003e1 × Oil seal\/O-ring\u003c\/li\u003e\n \u003cli\u003e1 × Washer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and place the outboard in neutral.\u003c\/li\u003e\n \u003cli\u003ePlace a drain pan under the lower unit and drain the gearcase oil as required by the engine service procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the bolts securing the lower unit to the upper leg assembly.\u003c\/li\u003e\n \u003cli\u003eLower the gearcase carefully, taking care around the shift shaft, driveshaft, and water tube.\u003c\/li\u003e\n \u003cli\u003eRemove the old water-pump housing assembly from the lower unit.\u003c\/li\u003e\n \u003cli\u003eClean the driveshaft, splines, keyway, and all mounting surfaces thoroughly.\u003c\/li\u003e\n \u003cli\u003eInstall the new key and impeller. Confirm the impeller vanes are oriented correctly for the direction of rotation specified by the engine service information.\u003c\/li\u003e\n \u003cli\u003eInstall the new housing, cover, wear plate, cup insert, seals, and O-rings. Tighten fasteners to the engine manufacturer’s specified torque.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit while aligning the driveshaft, water tube, and shift shaft correctly.\u003c\/li\u003e\n \u003cli\u003eRefill the gearcase with the correct marine gear oil to the specified level.\u003c\/li\u003e\n \u003cli\u003eRun the engine with an appropriate water supply and confirm a strong, steady cooling-water tell-tale stream before normal operation.\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 this kit fits my engine?\u003c\/summary\u003e\n \u003cp\u003eCheck the engine brand, model, horsepower, stroke, market, year, and serial number against the compatibility table. Also verify that the original water-pump assembly uses a 0.438-inch (11.13 mm) impeller insert and compare the original part number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include a weak or missing tell-tale stream, an overheating alarm, abnormal heat, or steam from the exhaust. Continuing to operate an engine with inadequate cooling can cause severe damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I inspect or replace the impeller?\u003c\/summary\u003e\n \u003cp\u003eInspect the impeller during scheduled maintenance and replace it when the vanes are worn, cracked, permanently set, or damaged. Replacement intervals depend on the engine manufacturer’s service schedule and operating conditions; saltwater, sand, and silt can accelerate wear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhy are there different serial ranges for the same horsepower?\u003c\/summary\u003e\n \u003cp\u003eManufacturers may use different component specifications during production runs and across markets such as the USA, Belgium, Canada, and Australia. The complete serial number helps identify the correct engine configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement kit intended to replace the listed Mercury water-pump references. Compare the original components and verify fitment before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat should I do if the components do not match my original assembly?\u003c\/summary\u003e\n \u003cp\u003eDo not force installation or operate the engine. Recheck the engine model, serial number, market, original part number, and impeller insert size before contacting the seller for assistance.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the engine model, year, market, serial number, original part number, and impeller insert size before purchase.\u003c\/li\u003e\n \u003cli\u003eCompare the replacement components with the original assembly before installation.\u003c\/li\u003e\n \u003cli\u003eNever run an outboard without an adequate water supply.\u003c\/li\u003e\n \u003cli\u003eFollow the engine manufacturer’s service manual for disassembly, torque values, gear-oil service, and testing procedures.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended when lower-unit service experience or the correct service information is unavailable.\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 — Replacement components for routine outboard maintenance and repair.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Product references and compatibility information are provided to help you compare the original part before ordering.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupport for Installation Planning\u003c\/strong\u003e — Verify your engine details and original components before beginning service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723963961659,"sku":"24KM017-QM","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM017-QM.png?v=1763038526"},{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-2-stroke-3-9hp-9-8hp-replaces-47-89981q1","title":"Water Pump Impeller Service Kit – Mercury\/Mariner 2-Stroke 4HP, 4.5HP, 7.5HP \u0026 9.8HP (1975–1985), Replaces OEM 47-89981Q1","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; 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\u003eWater Pump Impeller Service Kit\u003c\/strong\u003e is intended for selected Mercury and Mariner 2-stroke outboard applications rated at 4HP, 4.5HP, 7.5HP and 9.8HP from approximately 1975 through 1985. The application uses a driveshaft connection with a 0.456-inch inner diameter. Always confirm the engine model and serial-number range before ordering.\u003c\/p\u003e\n\u003cp\u003eThis impeller service kit is listed as a replacement for Mercury OEM part \u003cstrong\u003e47-89981Q1\u003c\/strong\u003e. Catalog references identify the corresponding impeller as part 89810 and distinguish it from the similar 0.438-inch-inside-diameter application associated with OEM reference 47-89980T1.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned as a replacement impeller service kit for the listed Mercury and Mariner 2-stroke applications.\u003c\/li\u003e\n \u003cli\u003eNeoprene rubber impeller with a brass hub, as specified for this replacement component.\u003c\/li\u003e\n \u003cli\u003eSuitable for water-pump maintenance when the existing housing and related components are serviceable.\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 application with your original part. These numbers identify the replacement application and should not be used without confirming the engine details.\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\u003eApplication Note\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury OEM\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003ePrimary OEM reference for the 0.456-inch-inside-diameter application\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury impeller reference\u003c\/td\u003e\n \u003ctd\u003e89810\u003c\/td\u003e\n \u003ctd\u003eImpeller identified with the applicable water-pump service-kit listing\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\u003eThe catalog application is limited to the following general Mercury and Mariner 2-stroke outboard ratings and production period. Horsepower and year alone may not identify every application; verify the complete engine model and serial number before installation.\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\u003eBrand\u003c\/th\u003e\n \u003cth\u003eEngine Type\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eApproximate Years\u003c\/th\u003e\n \u003cth\u003eOEM Reference\u003c\/th\u003e\n \u003cth\u003eFitment Detail\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003e0.456-inch impeller inside diameter application\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003e0.456-inch impeller inside diameter application\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003e0.456-inch impeller inside diameter application\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003eOutboard\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003e0.456-inch impeller inside diameter application\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\u003eWater pump impeller service kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eReplacement installation in the existing water-pump assembly\u003c\/dd\u003e\n \u003cdt\u003eImpeller Inside Diameter\u003c\/dt\u003e\n \u003cdd\u003e0.456 inches\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n \u003cdd\u003eApproximately 32mm diameter × 14.4mm height (1.26in × 0.57in)\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n \u003cdd\u003eNeoprene rubber with brass hub\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n \u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n \u003cdd\u003eRefer to the applicable order and warranty policy\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Water pump impeller service-kit component\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The available catalog evidence identifies the application as an impeller service kit. It does not establish that a water-pump housing, wear plate, gasket set or other hardware is included. Inspect the package received before beginning the repair.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eSwitch off the engine, remove the ignition key and follow the manufacturer's safety procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit or gearcase according to the engine service manual.\u003c\/li\u003e\n \u003cli\u003eRemove the water-pump cover and inspect the housing, wear surfaces, key and fasteners.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller and note the direction of the vanes.\u003c\/li\u003e\n \u003cli\u003eClean the housing and mating surfaces. Replace worn or damaged water-pump components before reassembly.\u003c\/li\u003e\n \u003cli\u003eInstall the replacement impeller with the correct key and with the vanes oriented in the direction specified by the service manual.\u003c\/li\u003e\n \u003cli\u003eUse only a lubricant approved for the application if lubrication is required during installation.\u003c\/li\u003e\n \u003cli\u003eReassemble the pump and lower unit, tightening fasteners to the manufacturer's specifications.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in an appropriate water supply or test tank and confirm a strong cooling-water discharge before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm this impeller fits my Mercury or Mariner engine?\u003c\/summary\u003e\n \u003cp\u003eMatch the engine brand, 2-stroke configuration, horsepower, approximate production year and complete serial number with the manufacturer's service information. Also compare the original impeller's inside diameter. The application described here uses a 0.456-inch inside diameter and is listed for 4HP, 4.5HP, 7.5HP and 9.8HP engines from approximately 1975–1985.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between the 0.456-inch and 0.438-inch applications?\u003c\/summary\u003e\n \u003cp\u003eThe 0.456-inch application uses a different driveshaft connection from the similar 0.438-inch application. Do not substitute between them based only on horsepower or appearance. Compare the original part, driveshaft and engine identification before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this listing include a complete water-pump housing?\u003c\/summary\u003e\n \u003cp\u003eNo complete housing is identified by the available product information. This listing is for the impeller service-kit component. Inspect the water-pump housing, wear surfaces, key and gaskets, and replace any worn parts that are not serviceable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should a water-pump impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eReplacement intervals depend on operating hours, storage conditions and whether the engine is used in saltwater, sand or silt. Follow the engine manufacturer's maintenance schedule and replace the impeller sooner if cooling-water flow weakens or the engine shows signs of overheating.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a failing impeller?\u003c\/summary\u003e\n \u003cp\u003ePossible signs include reduced or intermittent tell-tale flow, overheating at idle or low speed, visible cracking or brittleness, damaged vanes, or an impeller that has taken a permanent set after extended storage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis is an aftermarket replacement component. Mercury OEM reference 47-89981Q1 is provided for application and interchange identification only; Mercury is not the manufacturer of this aftermarket item.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the engine model, serial number, original impeller and inside diameter before ordering.\u003c\/li\u003e\n \u003cli\u003eDo not run an outboard without an adequate water supply.\u003c\/li\u003e\n \u003cli\u003eReplace damaged or excessively worn pump components before returning the engine to service.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended when lower-unit removal or water-pump service is unfamiliar.\u003c\/li\u003e\n \u003cli\u003eProduct images and dimensions may vary slightly from the original component; application and dimensional checks remain the buyer's responsibility.\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 — Replacement components for maintenance and repair of marine equipment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Part references and fitment information are provided to help you compare your original component.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupport for Product Questions\u003c\/strong\u003e — Contact support with your engine model, serial number and original-part details when application information is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723963994427,"sku":"KZ-9H1V-WL1K","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/KZ-9H1V-WL1K.png?v=1763038527"},{"product_id":"water-pump-impeller-fits-mercury-4-4-5-6-7-5-9-8-hp-replaces-47-89981-47-65957","title":"Water Pump Impeller with Key – Fits Mercury Mariner 2-Stroke 3.9, 4, 4.5, 6, 7.5 \u0026 9.8 HP, 0.456 in Shaft","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller with key\u003c\/strong\u003e is designed for selected Mercury and Mariner 2-stroke outboard applications using a 0.456-inch shaft. It is intended to restore water-pump circulation and help maintain proper engine cooling when the original impeller is worn, damaged, or due for scheduled service.\u003c\/p\u003e\n\u003cp\u003eThe product is supplied as one impeller with one matching key. It is not a complete water-pump service kit and does not include the pump housing, wear plate, gaskets, seals, or other water-pump components.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eApplication range: Mercury and Mariner 2-stroke outboards rated 3.9, 4, 4.5, 6, 7.5, and 9.8 HP.\u003c\/li\u003e\n \u003cli\u003eRequired shaft inside diameter: 0.456 inch.\u003c\/li\u003e\n \u003cli\u003eIncludes the impeller and key needed for the listed application.\u003c\/li\u003e\n \u003cli\u003eAftermarket replacement for maintenance or repair of the outboard water-pump system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eUse the following manufacturer and aftermarket reference numbers together with the shaft and engine details to confirm suitability before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or source\u003c\/th\u003e\n\u003cth\u003eReference number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981T2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-65957\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-39074\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3039\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45305\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e12270\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCEF\u003c\/td\u003e\n\u003ctd\u003e500314\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\u003eFor the listed Mercury and Mariner 2-stroke applications, verify the complete engine identification and confirm that the water-pump shaft uses the required 0.456-inch diameter. Horsepower alone is not sufficient to confirm fitment because different engines and serial ranges may use different impellers.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Applications\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eRated horsepower\u003c\/th\u003e\n\u003cth\u003eShaft requirement\u003c\/th\u003e\n\u003cth\u003eFitment note\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e3.9 HP\u003c\/td\u003e\n\u003ctd\u003e0.456 in\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine model and water-pump shaft before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e4 HP\u003c\/td\u003e\n\u003ctd\u003e0.456 in\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine model and water-pump shaft before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e4.5 HP\u003c\/td\u003e\n\u003ctd\u003e0.456 in\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine model and water-pump shaft before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e6 HP\u003c\/td\u003e\n\u003ctd\u003e0.456 in\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine model, serial range, and water-pump shaft before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e7.5 HP\u003c\/td\u003e\n\u003ctd\u003e0.456 in\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine model and water-pump shaft before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e9.8 HP\u003c\/td\u003e\n\u003ctd\u003e0.456 in\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine model and water-pump shaft before ordering.\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\u003eWater pump impeller with key\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n \u003cdd\u003eMercury and Mariner 2-stroke outboards\u003c\/dd\u003e\n \u003cdt\u003eRated horsepower range\u003c\/dt\u003e\n \u003cdd\u003e3.9, 4, 4.5, 6, 7.5, and 9.8 HP\u003c\/dd\u003e\n \u003cdt\u003eShaft inside diameter\u003c\/dt\u003e\n \u003cdd\u003e0.456 inch\u003c\/dd\u003e\n \u003cdt\u003eAftermarket reference\u003c\/dt\u003e\n \u003cdd\u003eSierra 18-3039\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n \u003cdd\u003eNot specified in the product record\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 Water pump impeller\u003c\/li\u003e\n \u003cli\u003e1 x Matching impeller key\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGaskets, seals, wear plates, pump housings, and other water-pump service parts are not included unless separately stated.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eConfirm the engine model, stroke, serial information where applicable, and 0.456-inch shaft requirement before beginning installation.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit or gearcase according to the engine manufacturer's service procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the water-pump housing and carefully extract the old impeller and key.\u003c\/li\u003e\n \u003cli\u003eClean debris, corrosion, and damaged gasket material from the pump housing and related sealing surfaces.\u003c\/li\u003e\n \u003cli\u003eInstall the supplied key and impeller in the same orientation as the original component.\u003c\/li\u003e\n \u003cli\u003eInspect the housing, wear plate, seals, and gaskets. Replace worn or damaged components as required; replacement service parts are not included.\u003c\/li\u003e\n \u003cli\u003eReassemble the water pump and lower unit using the manufacturer's torque specifications.\u003c\/li\u003e\n \u003cli\u003eTest the outboard in water and confirm a steady cooling-water tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this impeller fits my engine?\u003c\/summary\u003e\n \u003cp\u003eConfirm all of the following: Mercury or Mariner brand, 2-stroke configuration, one of the listed horsepower ratings, and a water-pump shaft with a 0.456-inch diameter. Check the engine model and serial information where applicable, then compare the old impeller and key before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this product include a key?\u003c\/summary\u003e\n \u003cp\u003eYes. The product is supplied as one water-pump impeller with one matching key.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this a complete water-pump repair kit?\u003c\/summary\u003e\n \u003cp\u003eNo. This listing is for the impeller and key only. The pump housing, wear plate, gaskets, seals, and other service components are not included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat happens if my shaft is a different size?\u003c\/summary\u003e\n \u003cp\u003eDo not install this impeller on a shaft that does not match the required 0.456-inch diameter. A different shaft size can cause improper fitment, poor water-pump performance, and possible engine damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a worn water-pump impeller?\u003c\/summary\u003e\n \u003cp\u003ePossible signs include a weak or missing tell-tale stream, overheating at idle or low speed, or a high-temperature warning. Stop operation and inspect the cooling system if any of these symptoms appear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement impeller. The listed Mercury, Sierra, Mallory, GLM, and CEF numbers are reference numbers used to help identify the intended application.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the engine model, stroke, horsepower, serial information where applicable, shaft diameter, and original impeller before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not rely on horsepower alone to determine fitment.\u003c\/li\u003e\n \u003cli\u003eFollow the outboard manufacturer's service instructions and torque specifications.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not familiar with lower-unit or water-pump service.\u003c\/li\u003e\n \u003cli\u003eNever operate the outboard without an adequate water supply for cooling.\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 — Practical aftermarket components for routine maintenance and repair.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-focused fitment\u003c\/strong\u003e — Product information highlights the engine, stroke, and shaft conditions needed for selection.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCustomer support\u003c\/strong\u003e — Contact support with your engine model and serial information if you need help checking the application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723968778555,"sku":"17IM003K","price":18.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_for_Mercury_4_45_6_75_98_HP_47-89981_47-65957_-_JLM_MARINE-8288499.jpg?v=1763038729"},{"product_id":"water-pump-impeller-fits-mercury-mariner-4-9-8hp-outboards-replaces-47-89981-47-65957-47-39074","title":"Water Pump Impeller – Fits Mercury\/Mariner 4–9.8HP Outboards (Replaces 47-89981, 47-65957, 47-39074)","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is designed for select Mercury and Mariner 2-stroke outboards using the larger approximately 0.456-inch (11.6 mm) impeller bore. It circulates cooling water through the water-pump system to help maintain proper engine operating temperature.\u003c\/p\u003e\n\u003cp\u003eCatalog references identify this application as a replacement for Mercury OEM numbers \u003cstrong\u003e47-89981\u003c\/strong\u003e, \u003cstrong\u003e47-65957\u003c\/strong\u003e, and \u003cstrong\u003e47-39074\u003c\/strong\u003e. Always verify the original impeller, bore size, engine serial number, and water-pump configuration before ordering.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eReplacement impeller for select Mercury and Mariner outboard cooling systems.\u003c\/li\u003e\n \u003cli\u003eDesigned for the approximately 0.456-inch (11.6 mm) impeller bore application.\u003c\/li\u003e\n \u003cli\u003eCatalog cross-reference: Sierra 18-3039 and GLM 89810.\u003c\/li\u003e\n \u003cli\u003eDrive style and water-pump configuration must match the original part; do not rely on horsepower alone.\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 reference numbers associated with this impeller application. They are provided for identification and cross-reference only.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981B\u003c\/td\u003e\n\u003ctd\u003eRelated OEM suffix reference; verify application\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-65957\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-39074\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3039\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM Marine\u003c\/td\u003e\n\u003ctd\u003e89810\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 \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis impeller is intended for select Mercury and Mariner 2-stroke outboards in the 4–9.8 HP range, including the applications listed below. Model, year, serial number, and impeller bore must be checked together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Mercury and Mariner outboards in similar horsepower ranges may use different impeller bore sizes. This part is for the approximately 0.456-inch (11.6 mm) application. It is not intended for the smaller approximately 0.438-inch-bore impeller application.\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\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Reference\u003c\/th\u003e\n\u003cth\u003eApplication Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4 HP\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eVerify serial number and approximately 0.456-inch impeller bore.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4 HP\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eUSA model range; verify serial number and bore.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e4.5 HP\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eVerify serial number and approximately 0.456-inch impeller bore.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e6 HP\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1976–1979\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eSerial range 1916139–2193817; verify the original impeller.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e6 HP\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1983\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eSerial range 2193818–2529894; verify the original impeller.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e7.5 HP\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1976–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eSerial range 4131610–5226934; verify the original impeller.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.8 HP (110)\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1976–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eSerial range 2196389–5206549; verify the original impeller.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e4 HP\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eUse only with the approximately 0.456-inch impeller bore application.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e4.5 HP\u003c\/td\u003e\n\u003ctd\u003e4.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eUse only with the approximately 0.456-inch impeller bore application.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e6 HP\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1983\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eUse only with the approximately 0.456-inch impeller bore application.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e7.5 HP\u003c\/td\u003e\n\u003ctd\u003e7.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eUse only with the approximately 0.456-inch impeller bore application.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e9.8 HP\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1986\u003c\/td\u003e\n\u003ctd\u003e47-89981\u003c\/td\u003e\n\u003ctd\u003eUse only with the approximately 0.456-inch impeller bore application.\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\u003eWater pump impeller\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected Mercury and Mariner 2-stroke outboard cooling systems\u003c\/dd\u003e\n \u003cdt\u003eImpeller Bore\u003c\/dt\u003e\n\u003cdd\u003eApproximately 0.456 inch (11.6 mm)\u003c\/dd\u003e\n \u003cdt\u003eOutside Diameter\u003c\/dt\u003e\n\u003cdd\u003eApproximately 1.250 inches (31.8 mm), subject to manufacturing tolerance\u003c\/dd\u003e\n \u003cdt\u003eDrive Style\u003c\/dt\u003e\n\u003cdd\u003eMatch the original impeller and water-pump shaft configuration before installation\u003c\/dd\u003e\n \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline outboard engines\u003c\/dd\u003e\n \u003cdt\u003eReplacement Type\u003c\/dt\u003e\n\u003cdd\u003eAftermarket direct-replacement impeller\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e1 × water pump impeller\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003eNo gasket, water-pump housing, wear plate, pin, key, or other water-pump service parts are included unless specifically shown or stated with the selected product.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the safety lanyard. Follow the engine manufacturer’s service precautions.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit according to the service manual for your exact engine and serial number.\u003c\/li\u003e\n \u003cli\u003eOpen the water-pump housing and note the orientation and drive arrangement of the original impeller.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller and inspect the housing, wear plate, shaft, pin or key, gaskets, and seals for wear or damage.\u003c\/li\u003e\n \u003cli\u003eClean the water-pump cavity and confirm that the replacement bore and drive arrangement match the original part.\u003c\/li\u003e\n \u003cli\u003eLubricate the impeller with clean water or a lubricant approved for marine water-pump installation. Do not use a petroleum product that may damage the impeller material.\u003c\/li\u003e\n \u003cli\u003eInstall the impeller with the vanes oriented in the operating direction specified by the service manual. Do not force an incorrect bore or drive style onto the shaft.\u003c\/li\u003e\n \u003cli\u003eReassemble the water-pump housing with serviceable gaskets and seals, tightening fasteners to the manufacturer’s specified torque.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit and verify gear-shift and cooling-water connections before operation.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in water or with an appropriate flushing attachment, and confirm a steady cooling-water discharge before normal use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm that this impeller fits my Mercury or Mariner engine?\u003c\/summary\u003e\u003cp\u003eCheck the engine brand, exact model, year, serial number, OEM reference, and impeller bore. The approximately 0.456-inch bore is the key application distinction. Compare the replacement with the old impeller and consult the engine service manual before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon signs include a weak or missing cooling-water discharge, higher-than-normal operating temperature, an overheating alarm, or visible damage to the impeller or water-pump housing. Stop the engine if overheating occurs and inspect the complete cooling system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should an impeller be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on engine use, storage, water conditions, and the manufacturer’s maintenance schedule. Replace an impeller when it is damaged, hardened, cracked, deformed, or when cooling-water flow is reduced. Seasonal inspection is recommended for frequently used engines.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this impeller fit every Mercury or Mariner engine from 4 to 9.8 HP?\u003c\/summary\u003e\u003cp\u003eNo. Horsepower and model year alone do not establish fitment. Some engines use a different impeller bore or water-pump configuration. Confirm the serial number and approximately 0.456-inch bore before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement impeller. Mercury OEM numbers and aftermarket numbers shown on this page are reference numbers used to help identify the application; they do not indicate that this product is manufactured by Mercury, Sierra, or GLM.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre gaskets or other water-pump parts included?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for one impeller only. Gaskets, seals, wear plates, housings, pins, keys, and other service parts are not included unless specifically stated in the package contents.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat should I do if the impeller does not match my original part?\u003c\/summary\u003e\u003cp\u003eDo not install it. Compare the bore, outside diameter, height, vane arrangement, and drive style with the original part, then confirm the engine serial number and water-pump diagram before proceeding.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the engine model, year, serial number, OEM reference, and impeller dimensions before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard with inadequate cooling-water flow.\u003c\/li\u003e\n \u003cli\u003eUse the manufacturer’s service manual for torque values, lower-unit removal, and water-pump assembly procedures.\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 correct application or service procedure is uncertain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eMarine replacement parts selected for practical repair and maintenance applications.\u003c\/li\u003e\n \u003cli\u003eClear cross-reference information to help match replacement parts with the original component.\u003c\/li\u003e\n \u003cli\u003eCustomer support is available for product-identification questions before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723968811323,"sku":"fys12111236","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/fys12111236.png?v=1763038731"},{"product_id":"water-pump-impeller-repair-kit-fits-mercury-marine-4-9-8-hp-replaces-46-70941a3","title":"Water Pump Impeller Service Kit with Housing – Fits Mercury Mariner 2-Stroke 4–9.8 HP (Replaces 46-70941A3)","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\u003eWater Pump Impeller Service Kit with Housing\u003c\/strong\u003e is designed for selected Mercury and Mariner 2-stroke outboard applications in the 4 HP, 4.5 HP, 6 HP, 7.5 HP, and 9.8 HP range. It is intended to service the water pump and restore dependable cooling-system circulation when the impeller, pump housing, or related service components are worn.\u003c\/p\u003e\n \u003cp\u003eThe kit is associated with Mercury Marine reference \u003cstrong\u003e46-70941A3\u003c\/strong\u003e and includes a replacement pump housing together with the water-pump impeller and service components supplied for this application. Always compare your original parts and verify the engine serial-number range before installation.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eComplete water-pump service configuration with housing.\u003c\/li\u003e\n \u003cli\u003eDesigned for selected Mercury and Mariner 2-stroke outboards.\u003c\/li\u003e\n \u003cli\u003eSupports replacement of worn or damaged water-pump components during routine cooling-system service.\u003c\/li\u003e\n \u003cli\u003eAftermarket replacement part; Mercury, Sierra, and GLM references are provided for identification and cross-reference purposes only.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse these manufacturer and aftermarket references to compare the kit with your existing water-pump components.\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\u003c\/th\u003e\n \u003cth\u003eReference\u003c\/th\u003e\n \u003cth\u003eApplication in the Catalog\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e46-70941A3\u003c\/td\u003e\n \u003ctd\u003eWater-pump service reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e46-46893A6\u003c\/td\u003e\n \u003ctd\u003eWater pump housing assembly reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e47-22748\u003c\/td\u003e\n \u003ctd\u003eWater pump impeller reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3446\u003c\/td\u003e\n \u003ctd\u003eWater pump kit cross-reference\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM Marine\u003c\/td\u003e\n \u003ctd\u003e12122\u003c\/td\u003e\n \u003ctd\u003eWater pump complete service kit 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 \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eThis kit is intended for selected \u003cstrong\u003eMercury and Mariner 2-stroke outboards\u003c\/strong\u003e rated at 4 HP, 4.5 HP, 6 HP, 7.5 HP, and 9.8 HP. Catalog references identify the 4 HP, 4.5 HP, 7.5 HP, and 9.8 HP applications primarily within the 1975–1985 range; the company fitment record also lists the 6 HP application.\u003c\/p\u003e\n \u003cp\u003eFitment depends on the complete engine model and serial-number break, not horsepower alone. Confirm the serial number, pump-housing design, impeller dimensions, and original reference number before ordering.\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\u003eBrand\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eCatalog Year Range\u003c\/th\u003e\n \u003cth\u003eReference\u003c\/th\u003e\n \u003cth\u003eFitment Note\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e46-70941A3\u003c\/td\u003e\n \u003ctd\u003eVerify the exact model and serial number.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e46-70941A3\u003c\/td\u003e\n \u003ctd\u003eVerify the exact model and serial number.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eSee serial-number break\u003c\/td\u003e\n \u003ctd\u003e46-70941A3 \/ 46-46893A6\u003c\/td\u003e\n \u003ctd\u003eConfirm the housing and impeller configuration.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e46-70941A3\u003c\/td\u003e\n \u003ctd\u003eVerify the exact model and serial number.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1985\u003c\/td\u003e\n \u003ctd\u003e46-70941A3\u003c\/td\u003e\n \u003ctd\u003eSome catalog listings identify this application as Model 110; verify serial number.\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\u003eWater pump impeller service kit with housing\u003c\/dd\u003e\n \u003cdt\u003eEngine Type\u003c\/dt\u003e\n \u003cdd\u003eSelected Mercury and Mariner 2-stroke outboards\u003c\/dd\u003e\n \u003cdt\u003eRated Horsepower\u003c\/dt\u003e\n \u003cdd\u003e4, 4.5, 6, 7.5, and 9.8 HP applications\u003c\/dd\u003e\n \u003cdt\u003ePrimary Mercury Reference\u003c\/dt\u003e\n \u003cdd\u003e46-70941A3\u003c\/dd\u003e\n \u003cdt\u003eHousing Reference\u003c\/dt\u003e\n \u003cdd\u003e46-46893A6\u003c\/dd\u003e\n \u003cdt\u003eImpeller Reference\u003c\/dt\u003e\n \u003cdd\u003e47-22748\u003c\/dd\u003e\n \u003cdt\u003eImpeller Reference Dimensions\u003c\/dt\u003e\n \u003cdd\u003eApproximately 1.250 inches outside diameter and 0.456 inches inside diameter, where applicable; verify against the original part.\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eReplacement service; installation should follow the engine manufacturer's service procedure.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\n \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n \u003cp\u003eThis listing is supplied as a water-pump service kit with housing. The package includes the replacement water-pump housing, water-pump impeller, and the associated service components supplied for this application.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eWater pump housing\u003c\/li\u003e\n \u003cli\u003eWater pump impeller\u003c\/li\u003e\n \u003cli\u003eWater-pump service gaskets, seals, and related components as supplied for the application\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003ePackage contents may vary by application configuration. Compare the included parts with the original assembly before beginning installation.\u003c\/p\u003e\n\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eConfirm the engine model, serial number, stroke type, and original water-pump references before disassembly.\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery or ignition power and follow the safety instructions in the engine service manual.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit according to the manufacturer's service procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the old water-pump housing, impeller, wear surfaces, and related seals or gaskets.\u003c\/li\u003e\n \u003cli\u003eClean the mating surfaces and inspect the driveshaft, key or drive feature, pump base, and water passages for wear or damage.\u003c\/li\u003e\n \u003cli\u003eInstall the replacement service components in the correct order and orientation. Do not force the impeller or housing into place.\u003c\/li\u003e\n \u003cli\u003eLubricate the impeller and housing as recommended by the engine manufacturer, using a lubricant compatible with the pump materials.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit and tighten all fasteners to the manufacturer's specifications.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in an appropriate test tank or in the water. Confirm a steady cooling-water tell-tale stream and check for leaks or overheating.\u003c\/li\u003e\n \u003c\/ol\u003e\n\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I confirm this kit fits my motor?\u003c\/summary\u003e\n \u003cp\u003eCheck the complete engine model and serial number against the application information, then compare the original pump housing and impeller with the references and dimensions listed above. Horsepower by itself is not sufficient to confirm fitment.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhich engines are covered by the listed application?\u003c\/summary\u003e\n \u003cp\u003eThe company fitment record lists Mercury and Mariner 2-stroke applications in the 4 HP, 4.5 HP, 6 HP, 7.5 HP, and 9.8 HP range. Catalog references identify the 4 HP, 4.5 HP, 7.5 HP, and 9.8 HP applications primarily from 1975–1985. Always verify the serial-number break.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat symptoms indicate a worn water-pump impeller?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include a weak or missing tell-tale stream, overheating, an overheating alarm, or visible impeller damage. Stop operating the engine if it overheats and inspect the cooling system before further use.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDoes the kit include the water-pump housing?\u003c\/summary\u003e\n \u003cp\u003eYes. The applicable company product record describes this product as a water-pump service kit with housing. Confirm the housing style and serial-number range before installation.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement kit. The Mercury, Sierra, and GLM numbers shown on this page are manufacturer or aftermarket reference numbers used for identification and cross-reference.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eReplacement intervals depend on operating conditions, storage, water quality, and the engine manufacturer's maintenance schedule. Inspect the impeller regularly and replace it when it shows cracking, hardening, vane damage, deformation, or reduced cooling-water flow.\u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify the engine model, year or production range, stroke type, serial number, and original part before ordering.\u003c\/li\u003e\n \u003cli\u003eDo not rely on horsepower alone for fitment confirmation.\u003c\/li\u003e\n \u003cli\u003eCompare the original housing, impeller, key or drive feature, and seals with the supplied components.\u003c\/li\u003e\n \u003cli\u003eNever run an outboard without adequate cooling-water supply.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component. Professional installation is recommended when the correct service procedure is 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 Replacement Parts\u003c\/strong\u003e — We provide aftermarket components for practical marine repair and maintenance applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Reference numbers and fitment details are presented to help customers compare their original parts before ordering.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eService Support\u003c\/strong\u003e — For the best result, use the engine manufacturer's service instructions and verify the complete model and serial-number information.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723968844091,"sku":"18KM005-QM","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/18KM005-QM.png?v=1763038733"},{"product_id":"water-pump-impeller-repair-kit-fits-mercury-marine-4-9-8-hp-replaces-47-89981q1-47-89981t1-47-89981t2","title":"Water Pump Impeller Repair Kit for Mercury and Mariner 4–9.8 HP 2-Stroke Outboards – Replaces 47-89981Q1, 47-89981T1 and 47-89981T2","description":"\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; word-break:normal; letter-spacing:normal; 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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Repair Kit\u003c\/strong\u003e is designed for Mercury and Mariner 4, 4.5, 6, 7.5, and 9.8 HP 2-stroke outboard motors manufactured between 1975 and 1986. The kit provides the components needed to service the lower-unit water pump and help restore proper cooling-water flow.\u003c\/p\u003e\n\u003cp\u003eIt replaces or cross-references Mercury part numbers 47-89981Q1, 47-89981T1, and 47-89981T2, as well as Sierra 18-3239, GLM 12270, and Soxa Marine 18KM001. Confirm the engine model, year, and serial-number range before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls in the lower-unit water-pump assembly.\u003c\/li\u003e\n\u003cli\u003eIncludes a durable neoprene impeller with a brass hub.\u003c\/li\u003e\n\u003cli\u003eIncludes a marine-grade SS316 wear plate and associated seals and O-rings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to compare the listed OEM and aftermarket references. Part-number appearance alone does not replace model and serial-number verification.\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\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981Q1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981T1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-89981T2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3239\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e12270\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSoxa Marine\u003c\/td\u003e\n\u003ctd\u003e18KM001\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model, year, horsepower, stroke, and serial number against the table below before purchase. Mercury and Mariner outboards can have mid-year production changes, so the serial-number range is important for fitment.\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\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury 4 HP\u003c\/td\u003e\n \u003ctd\u003e4\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 5595532 and up, U.S.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury 4.5 HP\u003c\/td\u003e\n \u003ctd\u003e4.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 5595532 and up; 1-cylinder model\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury 6 HP\u003c\/td\u003e\n \u003ctd\u003e6\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003eFor S\/N 1916139 through 2529894\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury 7.5 HP\u003c\/td\u003e\n \u003ctd\u003e7.5\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003eModel 75; S\/N 5206550 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury 9.8 HP\u003c\/td\u003e\n \u003ctd\u003e9.8\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1975–1986\u003c\/td\u003e\n \u003ctd\u003e47-89981Q1\u003c\/td\u003e\n \u003ctd\u003eMercury 110 model; S\/N 5206550 and up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n \u003cdd\u003eWater Pump Impeller Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eLower unit\u003c\/dd\u003e\n \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n \u003cdd\u003eNeoprene with brass hub\u003c\/dd\u003e\n \u003cdt\u003eWear Plate Material\u003c\/dt\u003e\n \u003cdd\u003eMarine-grade SS316 stainless steel\u003c\/dd\u003e\n \u003cdt\u003eImpeller Blades\u003c\/dt\u003e\n \u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eImpeller Height\u003c\/dt\u003e\n \u003cdd\u003e14.4 mm (0.57 inches)\u003c\/dd\u003e\n \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n \u003cdd\u003e32.0 mm (1.26 inches)\u003c\/dd\u003e\n \u003cdt\u003eShaft Diameter\u003c\/dt\u003e\n \u003cdd\u003e11.0 mm (0.456 inches)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n \u003cdd\u003e11 g (0.45 oz)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n \u003cdd\u003e1 year\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Impeller, equivalent to 47-89981 and Sierra 18-3239\u003c\/li\u003e\n \u003cli\u003e1 x Wear Plate, 46895\u003c\/li\u003e\n \u003cli\u003e1 x Woodruff impeller key\u003c\/li\u003e\n \u003cli\u003e1 x Guide sleeve for the water-inlet tube\u003c\/li\u003e\n \u003cli\u003e1 x Seal, 700-85651\u003c\/li\u003e\n \u003cli\u003e2 x O-rings, 700-81230 and 700-81090\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the spark-plug wires and shift the engine into neutral.\u003c\/li\u003e\n \u003cli\u003eRemove the bolts securing the lower unit or gearcase, then carefully lower the unit.\u003c\/li\u003e\n \u003cli\u003eRemove the water-pump housing cover to access the old impeller.\u003c\/li\u003e\n \u003cli\u003eNote the old impeller-blade orientation before removal. Remove the Woodruff key from the driveshaft.\u003c\/li\u003e\n \u003cli\u003eClean the housing interior and inspect the wear plate and housing for scoring, cracks, or other damage. Replace damaged components before assembly.\u003c\/li\u003e\n \u003cli\u003eInstall the new Woodruff key, then slide the new impeller onto the driveshaft while twisting it in the direction of engine rotation so the blades seat correctly.\u003c\/li\u003e\n \u003cli\u003eInstall the new wear plate, O-rings, and seal, then reinstall the water-pump housing.\u003c\/li\u003e\n \u003cli\u003eLightly grease the driveshaft splines and reinstall the lower unit, ensuring that the water tube and shift shaft align correctly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this kit fit my 5 HP Mercury outboard?\u003c\/summary\u003e\u003cp\u003eNo. This kit is listed for the specific 4, 4.5, 6, 7.5, and 9.8 HP applications shown in the compatibility table. It is not listed for 5 HP Mercury or Mariner engines. Verify the horsepower, model, year, and serial number before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the impeller shaft size important?\u003c\/summary\u003e\u003cp\u003eYes. This impeller is specified for an 11.0 mm (0.456-inch) driveshaft diameter. An incorrect size can prevent proper water-pump operation and may contribute to overheating or engine damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy is my engine’s serial number important?\u003c\/summary\u003e\u003cp\u003eManufacturers may change water-pump components during a model-year or production run. This kit is listed only for the serial-number ranges shown in the compatibility table, so check the engine identification label before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen should I replace my water-pump impeller?\u003c\/summary\u003e\u003cp\u003eReplace the impeller according to the engine manufacturer’s maintenance schedule and inspect it regularly. Frequent operation in saltwater, sand, or silt can accelerate wear.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or missing telltale stream, an overheating warning, or an impeller that is brittle, cracked, deformed, or missing blades during inspection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part or an aftermarket one?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement kit, not a Mercury OEM component. It is supplied as a replacement for the listed application and reference numbers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast do you ship and what is the cost?\u003c\/summary\u003e\u003cp\u003eTypical worldwide transit is 5–15 days. Standard shipping is free, and available expedited options are shown at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal use. Contact support with your order details if an issue arises. Returns are accepted within the standard return window for unused items in their original condition. Refer to the applicable policy for complete instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the engine model, year, horsepower, stroke, serial-number range, and original-part dimensions before ordering.\u003c\/li\u003e\n \u003cli\u003eCompare the supplied parts with the original components before installation. Do not install the kit if the parts differ from the required application.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement kit, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safe and reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts designed for demanding real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery is available to most regions, typically within 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing supported by careful material selection and quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723968909627,"sku":"18KM001-QM","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/18KM001-QM.png?v=1763038736"},{"product_id":"water-pump-impeller-fits-mercury-tohatsu-nissan-8-9-9hp-4-stroke-6-8-9-8hp-2-stroke-replaces-47-8037481-3b2-65021-1","title":"Water Pump Impeller for Mercury 8\/9.9 HP 4-Stroke and Tohatsu\/Nissan 6\/8\/9.8 HP Outboards – Replaces 47-8037481, 3B2-65021-1","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n \u003c\/style\u003e\n\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis replacement \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is designed for selected Mercury, Tohatsu, and Nissan outboard cooling systems. It is a single impeller supplied for installation in the lower-unit water pump assembly.\u003c\/p\u003e\n \u003cp\u003eCompany fitment data identifies this impeller for Mercury 8 HP and 9.9 HP 4-stroke engines, including the 209 cc configuration, as well as Tohatsu\/Nissan 6 HP, 8 HP, and 9.8 HP 2-stroke engines. It is also listed for Tohatsu MFS8 and MFS9.8 4-stroke models. Always compare the part number and the original impeller before ordering.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eReplacement water pump impeller for selected small outboard engines.\u003c\/li\u003e\n \u003cli\u003eInstalls in the lower-unit water pump assembly.\u003c\/li\u003e\n \u003cli\u003eSold as one impeller; the square drive key is not included.\u003c\/li\u003e\n \u003cli\u003eAftermarket replacement component, not a manufacturer-branded OEM part.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003ePart Number References\u003c\/h2\u003e\n \u003cp\u003eUse the following manufacturer and aftermarket references to help compare your original part. A matching number should be confirmed together with the engine model, horsepower, stroke, and year or serial-number requirements.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n\u003cth\u003eBrand or Source\u003c\/th\u003e\n\u003cth\u003eReference 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\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n\u003ctd\u003eManufacturer reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3B2650211M\u003c\/td\u003e\n\u003ctd\u003eManufacturer reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8037481\u003c\/td\u003e\n\u003ctd\u003eManufacturer reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-803748-1\u003c\/td\u003e\n\u003ctd\u003eManufacturer reference variation\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e8037481\u003c\/td\u003e\n\u003ctd\u003eReference number\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e8M0214945\u003c\/td\u003e\n\u003ctd\u003eReference number\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-8920\u003c\/td\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eOMC \/ Evinrude Johnson\u003c\/td\u003e\n\u003ctd\u003e5040525\u003c\/td\u003e\n\u003ctd\u003eAdditional reference listed in company data\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3086\u003c\/td\u003e\n\u003ctd\u003eCatalog cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCEF\u003c\/td\u003e\n\u003ctd\u003e500344\u003c\/td\u003e\n\u003ctd\u003eCatalog cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45210\u003c\/td\u003e\n\u003ctd\u003eCatalog 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 Compatibility\u003c\/h2\u003e\n \u003cp\u003eThe fitment below combines the exact company product records with compatible catalog applications. It is not an exhaustive list of every engine variation. Confirm the complete model designation and serial-number range for your engine before installation.\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\u003c\/th\u003e\n\u003cth\u003eEngine or Model Family\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eFitment Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP and 9.9 HP, including 209 cc models\u003c\/td\u003e\n\u003ctd\u003e8\/9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e47-8037481; 47-803748-1\u003c\/td\u003e\n\u003ctd\u003eCompany-listed Mercury fitment. Confirm the exact model and serial range.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM6\/M8\/M9.8B\u003c\/td\u003e\n\u003ctd\u003e6\/8\/9.8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n\u003ctd\u003eCatalog applications include model years 2013–2022; exact serial conditions may vary.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS6\/MFS8\/MFS9.8 and MFS8\/MFS9.8A3\u003c\/td\u003e\n\u003ctd\u003e6\/8\/9.8 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n\u003ctd\u003eCompany-listed MFS8\/MFS9.8 fitment; catalog applications include multiple model-year variants.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eSelected 6\/8\/9.8 HP outboards sharing the listed application\u003c\/td\u003e\n\u003ctd\u003e6\/8\/9.8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n\u003ctd\u003eCompany-listed Nissan\/Tohatsu application. Verify the original impeller and model details.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch2\u003eTechnical Information\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n \u003cdd\u003eWater pump impeller\u003c\/dd\u003e\n \u003cdt\u003eProduct Construction\u003c\/dt\u003e\n \u003cdd\u003eRubber impeller with a driveshaft hub\u003c\/dd\u003e\n \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n \u003cdd\u003eLower-unit water pump assembly\u003c\/dd\u003e\n \u003cdt\u003eQuantity\u003c\/dt\u003e\n \u003cdd\u003eOne impeller\u003c\/dd\u003e\n \u003cdt\u003eDrive Key\u003c\/dt\u003e\n \u003cdd\u003eNot included; reuse or replace the key separately if required by the engine manufacturer\u003c\/dd\u003e\n \u003cdt\u003eBrand Status\u003c\/dt\u003e\n \u003cdd\u003eAftermarket replacement component\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 Water pump impeller\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e square drive key, water pump housing, gaskets, seals, or other lower-unit service parts.\u003c\/p\u003e\n\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eRefer to the engine service manual and place the engine in a safe, stable position before beginning work.\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery or ignition power as appropriate and prevent accidental starting.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit according to the manufacturer's procedure.\u003c\/li\u003e\n \u003cli\u003eOpen the water pump housing and remove the old impeller. Note the position of the drive key and the direction of the vanes.\u003c\/li\u003e\n \u003cli\u003eInspect the housing, wear plate, seals, and drive key for wear or damage. Replace damaged parts before reassembly.\u003c\/li\u003e\n \u003cli\u003eInstall the correct key if required, then fit the new impeller onto the driveshaft. Use a suitable lubricant recommended for water-pump service.\u003c\/li\u003e\n \u003cli\u003eReinstall the water pump housing and any gaskets or seals in the correct positions.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit and tighten all fasteners to the service-manual specifications.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in an appropriate test tank or in the water. Confirm a steady cooling-water tell-tale stream and check for overheating or leaks.\u003c\/li\u003e\n \u003c\/ol\u003e\n\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\n \u003cp\u003eCompare your original impeller or service-manual number with the references listed above, then verify the complete engine brand, model, horsepower, stroke, year, and serial-number range. Do not rely on horsepower alone.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a worn impeller?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include a weak or intermittent tell-tale stream, overheating, reduced cooling-water flow, cracked or stiff vanes, missing vane material, or an impeller that has taken a permanent set.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDoes this product include the square key?\u003c\/summary\u003e\n \u003cp\u003eNo. The company product record identifies this as a single impeller, not a kit. The drive key is not included and must be reused or sourced separately when required.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement impeller. The manufacturer and aftermarket numbers shown on this page are reference numbers used for fitment comparison.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should an impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eFollow the maintenance interval in your engine manufacturer's service manual. Inspect the impeller regularly and replace it sooner if the engine has been operated in sandy, silty, or debris-filled water or if cooling-water flow declines.\u003c\/p\u003e\n \u003c\/details\u003e\n\n \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eConfirm the exact engine application before purchase and installation.\u003c\/li\u003e\n \u003cli\u003eKeep horsepower, stroke, model, year, and serial-number conditions together when checking compatibility.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard without adequate cooling-water supply.\u003c\/li\u003e\n \u003cli\u003eReplace damaged gaskets, seals, wear plates, or drive keys as needed during water-pump service.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are unfamiliar with lower-unit or water-pump service.\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 — Practical replacement components for routine outboard maintenance and repair.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and fitment information are provided to help you compare the original part.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eValue for Maintenance\u003c\/strong\u003e — Aftermarket components for keeping essential marine systems in service.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723979886907,"sku":"17IT006","price":14.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IT0061_d97e4bfa-c23b-43ff-9164-cbf5578e8c07.jpg?v=1763039189"},{"product_id":"water-pump-impeller-fits-mercury-mariner-8-9-9-hp-4-stroke-6-8-9-8-hp-2-stroke-replaces-47-8037481-3b2-65021-1","title":"Water Pump Impeller – Fits Tohatsu\/Nissan 6, 8 \u0026 9.8 HP Outboards (Replaces 3B2-65021-1, CEF 500344)","description":"\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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis high-quality \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is designed for selected Tohatsu and Nissan 6, 8, and 9.8 HP outboard engines. It replaces the original Tohatsu\/Nissan reference \u003cstrong\u003e3B2-65021-1\u003c\/strong\u003e and is matched to the CEF 500344 impeller specification for reliable water circulation through the outboard cooling system.\u003c\/p\u003e\n\u003cp\u003eThe impeller is installed in the lower-unit water pump assembly. Regular inspection and timely replacement help maintain cooling-water flow and reduce the risk of overheating caused by worn, cracked, or damaged impeller blades.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket replacement water pump impeller for selected small outboards.\u003c\/li\u003e\n\u003cli\u003eApplicable to the 6, 8, and 9.8 HP impeller application shown in the compatibility information below.\u003c\/li\u003e\n\u003cli\u003eDesigned for the lower-unit water pump assembly.\u003c\/li\u003e\n\u003cli\u003eVerify the engine model, stroke, year, serial number, and original impeller dimensions before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese are manufacturer and aftermarket reference numbers associated with this impeller application. They are provided for identification and cross-reference purposes only.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n \u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF\u003c\/td\u003e\n \u003ctd\u003e500344\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8920\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eParsun\u003c\/td\u003e\n \u003ctd\u003ePAF8-04000200\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eFitment must be confirmed against the complete engine identification information. Horsepower alone is not sufficient because water-pump components can vary by model family, stroke, year, and serial-number range.\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\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel or Application\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eOEM Reference\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eSelected 6, 8, and 9.8 HP models\u003c\/td\u003e\n \u003ctd\u003e6 \/ 8 \/ 9.8\u003c\/td\u003e\n \u003ctd\u003eConfirm for exact engine\u003c\/td\u003e\n \u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n \u003ctd\u003eMatch the original impeller and engine identification before purchase.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS8 \/ MFS9.8 applications\u003c\/td\u003e\n \u003ctd\u003e8 \/ 9.8\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n \u003ctd\u003eConfirm the precise model and serial-number range.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eSelected engines sharing the 3B2-65021-1 application\u003c\/td\u003e\n \u003ctd\u003e6 \/ 8 \/ 9.8\u003c\/td\u003e\n \u003ctd\u003eConfirm for exact engine\u003c\/td\u003e\n \u003ctd\u003e3B2-65021-1\u003c\/td\u003e\n \u003ctd\u003eUse the original part number and dimensions for final verification.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eParsun\u003c\/td\u003e\n \u003ctd\u003eSelected F6, F8, and F9.8 applications\u003c\/td\u003e\n \u003ctd\u003e6 \/ 8 \/ 9.8\u003c\/td\u003e\n \u003ctd\u003eConfirm for exact engine\u003c\/td\u003e\n \u003ctd\u003ePAF8-04000200\u003c\/td\u003e\n \u003ctd\u003eAftermarket cross-reference; verify against the engine and old impeller.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n \u003cdd\u003eWater pump impeller\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eReplaceable component in the lower-unit water pump assembly\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n \u003cdd\u003eNeoprene rubber with a molded hub\u003c\/dd\u003e\n \u003cdt\u003eOuter Diameter\u003c\/dt\u003e\n \u003cdd\u003eApproximately 40 mm\u003c\/dd\u003e\n \u003cdt\u003eHub Diameter\u003c\/dt\u003e\n \u003cdd\u003eApproximately 18 mm\u003c\/dd\u003e\n \u003cdt\u003eInner Shaft Opening\u003c\/dt\u003e\n \u003cdd\u003eApproximately 12.1 mm; compare with the original impeller before installation\u003c\/dd\u003e\n \u003cdt\u003eReference Specification\u003c\/dt\u003e\n \u003cdd\u003eCEF 500344 \/ Tohatsu 3B2-65021-1 application\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n \u003cdd\u003e1 year, subject to the applicable supplier terms\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Water pump impeller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA drive key, gasket, housing, wear plate, and other water-pump components are not included unless specifically shown or stated in the order details.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery or otherwise disable the engine to prevent accidental starting.\u003c\/li\u003e\n\u003cli\u003ePlace a drain pan under the lower unit and remove the gear-oil drain and fill screws if lower-unit removal requires draining the gearcase.\u003c\/li\u003e\n\u003cli\u003eRemove the fasteners securing the lower unit to the mid-section and carefully lower the gearcase.\u003c\/li\u003e\n\u003cli\u003eRemove the water-pump housing cover to expose the impeller.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller and drive key if fitted. Note the key position and the direction in which the original blades were folded.\u003c\/li\u003e\n\u003cli\u003eClean debris and corrosion from the impeller housing and inspect the housing and wear plate for grooves, distortion, or other damage.\u003c\/li\u003e\n\u003cli\u003eInstall the original or correctly specified drive key, then fit the new impeller over the shaft.\u003c\/li\u003e\n\u003cli\u003eUse a suitable water-pump assembly lubricant during installation. Turn the driveshaft in the correct direction for the engine while seating the impeller blades.\u003c\/li\u003e\n\u003cli\u003eReinstall the water-pump housing and tighten its fasteners to the engine manufacturer’s specifications.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit, ensuring that the driveshaft, shift shaft, and water tube are properly aligned.\u003c\/li\u003e\n\u003cli\u003eRefill the gearcase with the specified marine gear oil if it was drained, following the engine manufacturer’s procedure.\u003c\/li\u003e\n\u003cli\u003eRun the engine only with an adequate water supply and confirm a strong, steady tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I confirm this impeller fits my exact engine?\u003c\/summary\u003e\n\u003cp\u003eMatch the complete engine model, year, serial number, stroke, and original impeller reference. Also compare the old impeller’s outer diameter, hub, shaft opening, and drive-key arrangement. The 3B2-65021-1 application is associated with selected Tohatsu\/Nissan 6, 8, and 9.8 HP engines, but not every engine in those horsepower classes uses the same impeller.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\n\u003cp\u003eCommon signs include a weak or missing tell-tale stream, an overheating warning, rising engine temperature, damaged or missing blades, or a rubber impeller that has become brittle or deformed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often should I replace the impeller?\u003c\/summary\u003e\n\u003cp\u003eInspect the impeller regularly and replace it according to the engine manufacturer’s maintenance schedule. Frequent use in saltwater, sand, silt, or polluted water can shorten service life and may require more frequent inspection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the drive key included?\u003c\/summary\u003e\n\u003cp\u003eNo drive key is included with this impeller listing unless the order details specifically state otherwise. Reuse the correct serviceable key or obtain the properly specified replacement key separately.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy does the engine still overheat after replacing the impeller?\u003c\/summary\u003e\n\u003cp\u003eCheck the blade orientation, drive key, water-pump housing, wear plate, water-intake passages, water tube, thermostat, and cooling passages. A damaged housing or blocked cooling system can prevent proper water circulation even when the impeller is new.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n\u003cp\u003eThis is an aftermarket replacement impeller. The listed manufacturer and aftermarket numbers are reference numbers used to help identify the intended application; they do not indicate that this product is manufactured by Tohatsu, Nissan, CEF, Sierra, or Parsun.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow fast is shipping and what does it cost?\u003c\/summary\u003e\n\u003cp\u003eTypical transit is 5–15 days. Standard shipping is free to most regions, with expedited options available at checkout where applicable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use, subject to the applicable supplier terms. Returns are accepted within the standard return window for unused items in their original condition. Contact support for current policy details and return instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the exact engine model, year, serial number, stroke, and original impeller dimensions before ordering.\u003c\/li\u003e\n\u003cli\u003eDo not rely on horsepower alone to determine fitment.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended if you are unfamiliar with lower-unit or water-pump service.\u003c\/li\u003e\n\u003cli\u003eNever run an outboard without an adequate cooling-water supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine replacement parts selected for dependable service in real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery is available to most regions, with typical transit of 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing with attention to material quality and production consistency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723979952443,"sku":"24KM102-QM","price":19.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM102-QM.png?v=1763039192"},{"product_id":"water-pump-impeller-repair-kit-fits-mercury-tohatsu-8-9-8-9-9-hp-replaces-803750a03-3b2-87322-2","title":"Water Pump Impeller Repair Kit – Fits Mercury \u0026 Tohatsu 8\/9.8\/9.9 HP (Replaces 803750A03, 3B2-87322-2)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eRestore your outboard’s cooling system with this complete \u003cstrong\u003ewater pump impeller repair kit\u003c\/strong\u003e for selected Mercury, Tohatsu, and Nissan 8–9.9 HP outboards. The kit is intended for Mercury 8–9.9 HP 209cc 4-stroke models and selected Tohatsu and Nissan 8–9.8 HP outboards, including MFS8, MFS9.8, NSF8, and NSF9.8 series applications. Always compare your engine model, stroke, serial number, and original part number before ordering.\u003c\/p\u003e\n\u003cp\u003eThis kit is listed as an aftermarket replacement for Mercury references \u003cstrong\u003e46-803750A03\u003c\/strong\u003e, \u003cstrong\u003e803750A03\u003c\/strong\u003e, \u003cstrong\u003e80375A03\u003c\/strong\u003e, \u003cstrong\u003e803748Q01\u003c\/strong\u003e, and \u003cstrong\u003e803748K01\u003c\/strong\u003e. Tohatsu and Nissan legacy references include \u003cstrong\u003e3B2-87322-0\u003c\/strong\u003e, \u003cstrong\u003e3B2-87322-1\u003c\/strong\u003e, and \u003cstrong\u003e3B2-87322-2\u003c\/strong\u003e, with modern references including \u003cstrong\u003e3B2873220M\u003c\/strong\u003e, \u003cstrong\u003e3B2873221M\u003c\/strong\u003e, and \u003cstrong\u003e3B2873222M\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete water pump service kit for the listed applications.\u003c\/li\u003e\n\u003cli\u003eMarine-grade CR-neoprene impeller with nylon hub.\u003c\/li\u003e\n\u003cli\u003eIncludes the wear plate, insert cup, gaskets, driveshaft pin, bolts, and washers shown in the package list.\u003c\/li\u003e\n\u003cli\u003eDesigned as a direct replacement when the listed engine and part-number conditions match.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstyle\u003e\n.ss-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}\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@media(max-width:480px){table.ss-table th,table.ss-table td{padding:8px 10px;font-size:14px}}\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following references are provided for cross-reference purposes. A matching number should still be checked against the complete engine 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\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eSuperseded By\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-803750A03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003ePrimary replacement reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e46-803750A03\u003c\/td\u003e\n\u003ctd\u003eAlternate reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e80375A03\u003c\/td\u003e\n\u003ctd\u003e46-803750A03\u003c\/td\u003e\n\u003ctd\u003eAlternate reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e803748Q01\u003c\/td\u003e\n\u003ctd\u003e46-803750A03\u003c\/td\u003e\n\u003ctd\u003eAlternate reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e803748K01\u003c\/td\u003e\n\u003ctd\u003e46-803750A03\u003c\/td\u003e\n\u003ctd\u003eAlternate reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-0\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-1\u003c\/td\u003e\n\u003ctd\u003eLegacy reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-1\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-2\u003c\/td\u003e\n\u003ctd\u003eSuperseded reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-2\u003c\/td\u003e\n\u003ctd\u003e3B2873222M\u003c\/td\u003e\n\u003ctd\u003eCurrent-style reference shown for 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 \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eCompatibility depends on the complete engine configuration. For Mercury applications, verify the engine serial number against the applicable range. For Tohatsu and Nissan applications, verify the exact model suffix and stroke before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Mercury Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eSerial \/ Year Range\u003c\/th\u003e\n\u003cth\u003eOEM Reference\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0N014717–0N055109\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e209cc models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0N027903–0N055109\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e209cc models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0N055110 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e209cc models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0P325500 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e209cc models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0R042475 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e209cc models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.8 HP\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0N007788–0N055109\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.8 HP\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0N055110 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0N260037 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0P325500 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e0R042475 and up\u003c\/td\u003e\n\u003ctd\u003e803750A03\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe cross-reference list also includes selected Tohatsu and Nissan 2-stroke and 4-stroke models. The model, stroke, and applicable part-number conditions must match together.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Tohatsu and Nissan Engine Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Reference\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM8B\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-0\u003c\/td\u003e\n\u003ctd\u003eLegacy reference; verify replacement number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM9.8B\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-0\u003c\/td\u003e\n\u003ctd\u003eLegacy reference; verify replacement number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS8A \/ MFS8A2 \/ MFS8A3\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003–2014 where applicable\u003c\/td\u003e\n\u003ctd\u003e3B2873222M\u003c\/td\u003e\n\u003ctd\u003eVerify exact suffix.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.8A \/ MFS9.8A2 \/ MFS9.8A3\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003–2014 where applicable\u003c\/td\u003e\n\u003ctd\u003e3B2873222M\u003c\/td\u003e\n\u003ctd\u003eVerify exact suffix.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS8B\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-0\u003c\/td\u003e\n\u003ctd\u003eLegacy reference; verify replacement number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS9.8B\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e3B2-87322-0\u003c\/td\u003e\n\u003ctd\u003eLegacy reference; verify replacement number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF8A \/ NSF8A2 \/ NSF8A3\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003–2014 where applicable\u003c\/td\u003e\n\u003ctd\u003e3B2873222M\u003c\/td\u003e\n\u003ctd\u003eVerify exact suffix.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF9.8A \/ NSF9.8A2 \/ NSF9.8A3\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2003–2014 where applicable\u003c\/td\u003e\n\u003ctd\u003e3B2873222M\u003c\/td\u003e\n\u003ctd\u003eVerify exact suffix.\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\u003eWater pump impeller repair kit\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement when application conditions match\u003c\/dd\u003e\n\u003cdt\u003eHousing Components\u003c\/dt\u003e\n\u003cdd\u003eStainless steel wear plate and insert cup\u003c\/dd\u003e\n\u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade CR-neoprene with nylon hub\u003c\/dd\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.14 kg (0.31 lb)\u003c\/dd\u003e\n\u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n\u003cdt\u003eInternal Hub \/ Shaft Size\u003c\/dt\u003e\n\u003cdd\u003e12 mm (0.472 in)\u003c\/dd\u003e\n\u003cdt\u003eOuter Diameter\u003c\/dt\u003e\n\u003cdd\u003e40.3 mm (1.587 in)\u003c\/dd\u003e\n\u003cdt\u003eImpeller Height \/ Thickness\u003c\/dt\u003e\n\u003cdd\u003e18 mm (0.709 in)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Water pump impeller (8037481)\u003c\/li\u003e\n\u003cli\u003e1 × Driveshaft pin (9521811)\u003c\/li\u003e\n\u003cli\u003e1 × Insert cup (8037511)\u003c\/li\u003e\n\u003cli\u003e1 × Wear plate (8037531)\u003c\/li\u003e\n\u003cli\u003e1 × Gasket (8M0072139)\u003c\/li\u003e\n\u003cli\u003e1 × Gasket (8M0072138)\u003c\/li\u003e\n\u003cli\u003e1 × Gasket (8M0072137)\u003c\/li\u003e\n\u003cli\u003e4 × Bolts and washers (879194305)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the spark-plug wire and place the outboard in neutral.\u003c\/li\u003e\n\u003cli\u003eRemove the lower-unit bolts and carefully separate the lower unit from the upper casing.\u003c\/li\u003e\n\u003cli\u003eRemove the water-pump housing to access the existing impeller.\u003c\/li\u003e\n\u003cli\u003eNote the existing vane orientation before removing the impeller and driveshaft pin.\u003c\/li\u003e\n\u003cli\u003eClean the housing, wear plate, insert cup, and sealing surfaces. Remove old gasket material and debris.\u003c\/li\u003e\n\u003cli\u003eInstall the new gaskets, wear plate, and insert cup in the correct positions.\u003c\/li\u003e\n\u003cli\u003eInstall the new impeller while turning the driveshaft in the correct direction so the vanes seat properly.\u003c\/li\u003e\n\u003cli\u003eReassemble the water-pump housing and tighten the fasteners to the manufacturer’s specifications.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit, confirming proper alignment of the water tube and driveshaft.\u003c\/li\u003e\n\u003cli\u003eAfter installation, run the engine according to the service-manual procedure and confirm a normal cooling-water telltale stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm this kit fits my engine?\u003c\/summary\u003e\u003cp\u003eMatch the engine brand, exact model, horsepower, stroke, serial number or year range, and original part number against the information above. A listed reference such as 46-803750A03 or 3B2-87322-2 should be checked together with the complete engine application.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eTypical symptoms include a weak or missing telltale stream, overheating warnings, and reduced cooling performance. The removed impeller may have cracked, brittle, missing, distorted, or glazed vanes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on the engine manufacturer, operating hours, water conditions, and inspection results. Saltwater, sand, silt, and extended storage can increase wear, so inspect and replace the impeller according to the service manual.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs installation different on a 2-stroke and 4-stroke model?\u003c\/summary\u003e\u003cp\u003eThe basic lower-unit water-pump service is similar, but disassembly steps, fastener locations, torque values, and alignment procedures can vary. Use the service manual for the specific engine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if the impeller vanes are installed incorrectly?\u003c\/summary\u003e\u003cp\u003eIncorrect vane orientation can reduce water flow and may cause rapid overheating. Install the impeller in the orientation specified by the engine service manual and rotate the driveshaft as required during assembly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for an aftermarket replacement kit intended to match the listed applications and reference numbers. It is not supplied as an OEM-branded component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow quickly is the order shipped?\u003c\/summary\u003e\u003cp\u003eTypical transit is 5–15 days for standard worldwide shipping. Available expedited options and final delivery estimates are shown at checkout where applicable.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThe kit is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the applicable standard return period when the item is unused and in its original condition. Contact support for order-specific instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the engine model, stroke, serial number or year range, and original part before ordering.\u003c\/li\u003e\n\u003cli\u003eCompare the supplied components with the original parts before installation. Do not install the kit if the dimensions or components differ.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eFollow the engine manufacturer’s service manual for torque values, seal orientation, alignment, and testing.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when lower-unit service experience or the correct service information is unavailable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards:\u003c\/strong\u003e Marine replacement parts selected for dependable performance in real-world service conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment:\u003c\/strong\u003e Standard delivery is available to most regions, with delivery estimates shown at checkout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value:\u003c\/strong\u003e Practical aftermarket replacement parts at competitive pricing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723983884603,"sku":"24KM317-QM","price":42.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM317-QM.png?v=1763039383"}],"url":"https:\/\/seasierra.com\/collections\/mercury-2-stroke-9-8hp-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}