{"title":"Mercury 3.5HP 4-Stroke Outboard Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is your guide to Mercury 3.5 HP 4‑Stroke outboard engines. Use it to find compatible parts and service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Mercury collection. Scroll to the bottom of this page to start browsing parts for this engine, and use the Filter \u0026amp; Sort controls on the collection page to narrow by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#111827; color:#ffffff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Mercury Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 3.5 HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial\/model plate on the clamp bracket or swivel bracket. Note the full serial number and any suffix letters.\u003c\/li\u003e\n    \u003cli\u003eModel code and suffix usually indicate shaft length (S\/L), tiller\/remote control, and market (EPA\/non‑EPA). Record these to confirm parts.\u003c\/li\u003e\n    \u003cli\u003eThis is a 4‑Stroke platform; confirm you have a 4‑Stroke (oil fill\/dipstick present) rather than a 2‑Stroke (premix or oil‑injection).\u003c\/li\u003e\n    \u003cli\u003eSome parts vary by serial break; if available, provide the serial number to ensure correct carburetor, gasket, and ignition components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n  \u003ch3\u003eMercury 3.5 HP 4‑Stroke Portable\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eSingle‑cylinder, carbureted 4‑Stroke with recoil start and tiller steering\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e3.5 HP portable 4‑Stroke short\/long shaft variants; some differences across serial ranges (EPA vs non‑EPA)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eLightweight, quiet, fuel‑efficient, simple maintenance; ideal as tender or kicker motor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eSome components (carburetor, fuel\/evap routing, cylinder head covers, flywheel cup) can change at serial breaks. Verify serial number for best fit.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are typical guidelines for small 4‑Stroke outboards. Always follow the procedures and schedules in your official service manual.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; 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 #f3f4f6;\"\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFirst 20 hrs, then every 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eUse FC‑W 4‑Stroke marine oil; replace filter with oil change\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\" style=\"text-decoration:none;\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hrs or annually; also before off‑season storage\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect for water or metal; renew sealing washers\/seals as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\" style=\"text-decoration:none;\"\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 #f3f4f6;\"\u003eSpark plug(s)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect every 100 hrs; replace 200–300 hrs or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCheck gap and condition; replace if fouled or worn\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"text-decoration:none;\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFuel filter \/ inline filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect every 50–100 hrs; replace annually or if restricted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace sooner if using E10 or stale fuel; keep a spare onboard\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\" style=\"text-decoration:none;\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 2 seasons (fresh) or annually (salt\/silt)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCritical for cooling; renew more often if weak tell‑tale or overheating\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\" style=\"text-decoration:none;\"\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 #f3f4f6;\"\u003eAnodes (sacrificial)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect every 3 months; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eChoose zinc (salt), aluminum (brackish), or magnesium (fresh) as appropriate\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\" style=\"text-decoration:none;\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller \u0026amp; shear pin\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect each outing; replace on damage or vibration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCarry spare shear pin and cotter; check for fishing line at prop shaft\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\" style=\"text-decoration:none;\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"text-decoration:none;\"\u003eMercury Outboard Parts\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\" style=\"text-decoration:none;\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eLower Unit \/ Sealing: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\" style=\"text-decoration:none;\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\" style=\"text-decoration:none;\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \u0026amp; Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\" style=\"text-decoration:none;\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\" style=\"text-decoration:none;\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropeller \u0026amp; Safety: \u003ca href=\"https:\/\/seasierra.com\/collections\/propeller-guards\" style=\"text-decoration:none;\"\u003ePropeller Guards\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; 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 #f3f4f6;\"\u003eWeak tell‑tale stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect intake screen for debris; verify impeller condition and thermostat operation\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWater pump kit, thermostat, intake screen, housing gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCheck fresh fuel, choke operation, idle mixture, and plug condition\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFuel filter, carburetor service kit, spark plug\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eVerify prop not damaged; check for fuel restriction and proper venting; compression check if needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003ePropeller, fuel filter, vented fuel cap, carburetor jets\/needle, spark plug\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGearcase noise or milky gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect seals and drain\/fill gaskets; look for fishing line under prop hub\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, prop shaft seals, drain\/fill gaskets, shear pin \u0026amp; cotter\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or serial ranges?\u003c\/summary\u003e\n    \u003cp\u003eMany service items are common, but components like carburetors, ignition modules, and gaskets can vary at serial breaks or between EPA\/non‑EPA versions. Provide your full serial number to ensure the correct fit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs preventive maintenance, replace every 2 seasons in fresh water or annually in salt\/silt. Replace immediately if the tell‑tale is weak, you experience overheat warnings, or the pump was run dry.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange every 100 hours or annually. Always check for water intrusion (milky oil) or metal on the drain plug magnet; if found, service seals and recheck.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eShare the serial number, model code, shaft length (short\/long), region (EPA\/non‑EPA), and any visible part numbers or photos of the component needing replacement.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"margin-top:24px; padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts for your Mercury by horsepower, year, and model? Start with the main Mercury collection below.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#111827; color:#ffffff; text-decoration:none; border-radius:6px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n  \u003cp style=\"font-size:0.95em; color:#4b5563;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"mercury-2-5-3-5-hp-4-stroke-service-kit-fits-mercury-outboards-replaces-8m0181314","title":"Mercury 2.5\/3.5 HP 4-Stroke Service Kit – Fits Mercury Outboards (Replaces 8M0181314)","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 \u003cstrong\u003eMercury 2.5\/3.5 HP 4-Stroke Service Kit\u003c\/strong\u003e provides all the essential components for routine maintenance on Mercury 2.5–3.5 HP 4-Stroke outboards from 2017 and newer (serial number 0R131842 and above). The kit is assembled with quality parts to ensure reliable engine performance.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury OEM part numbers 8M0181314 and ME2-5-3-5.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for the standard 100-hour maintenance interval.\u003c\/li\u003e\n\u003cli\u003eIncludes engine oil, gear lube, and water pump components.\u003c\/li\u003e\n\u003cli\u003eSuitable for both DIY and professional installation.\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\u003e8M0181314\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eME2-5-3-5\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\u003eFourStroke\u003c\/td\u003e\n        \u003ctd\u003e2.5\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2017–and newer\u003c\/td\u003e\n        \u003ctd\u003e8M0181314\u003c\/td\u003e\n        \u003ctd\u003eSN 0R131842 and above\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eFourStroke\u003c\/td\u003e\n        \u003ctd\u003e3.5\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2017–and newer\u003c\/td\u003e\n        \u003ctd\u003e8M0181314\u003c\/td\u003e\n        \u003ctd\u003eSN 0R131842 and above\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\u003eOutboard Engine Service Kit\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eMaintenance Interval\u003c\/dt\u003e\n\u003cdd\u003e100 hours\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDIY or Professional\u003c\/dd\u003e\n  \u003cdt\u003eBox Dimensions\u003c\/dt\u003e\n\u003cdd\u003e10.0\"L x 11.4\"W x 7.4\"H\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 DCPR6E NGK spark plug\u003c\/li\u003e\n  \u003cli\u003e1 x Washer anode\u003c\/li\u003e\n  \u003cli\u003e1 x Water pump kit (impeller with 2 seals and plate)\u003c\/li\u003e\n  \u003cli\u003e1 x Engine oil drain plug gasket\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Gearcase drain screw gaskets\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e1 x Liter of Quicksilver 10W30 engine oil\u003c\/li\u003e\n  \u003cli\u003e1 x Quicksilver gear oil (tube)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the engine is off and cool. Disconnect the spark plug lead for safety.\u003c\/li\u003e\n  \u003cli\u003ePosition a drain pan under the lower unit and remove the upper and lower gearcase drain screws to drain the old gear lube.\u003c\/li\u003e\n  \u003cli\u003ePosition a drain pan under the powerhead, remove the oil drain plug, and drain the old engine oil.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit to access and replace the water pump impeller, plate, and seals.\u003c\/li\u003e\n  \u003cli\u003eReplace the spark plug with the new NGK plug.\u003c\/li\u003e\n  \u003cli\u003eInstall the new engine oil drain plug gasket and gearcase drain screw gaskets, then tighten the plugs to the manufacturer's recommended torque.\u003c\/li\u003e\n  \u003cli\u003eFill the gearcase with new gear lube from the bottom hole until it flows from the top hole, then install the top plug, followed by the bottom plug.\u003c\/li\u003e\n  \u003cli\u003eFill the engine with the new 10W30 oil to the level indicated on the dipstick.\u003c\/li\u003e\n\u003cli\u003eRe-attach the lower unit and the spark plug lead. Check all fluid levels and inspect for leaks 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 kit fit my specific Mercury outboard?\u003c\/summary\u003e\n  \u003cp\u003eThis kit is designed exclusively for Mercury 2.5 HP and 3.5 HP 4-stroke models manufactured in 2017 or later, with a serial number of 0R131842 and above. Please verify your engine's serial number before purchasing to ensure compatibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the recommended service interval for using this kit?\u003c\/summary\u003e\n  \u003cp\u003eThis kit contains all the necessary parts for a standard 100-hour or annual service, as recommended by the manufacturer. Regular maintenance at these intervals is crucial for engine longevity and performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my water pump needs replacing?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs of a failing water pump impeller include a weak or intermittent water stream from the \"tell-tale\" outlet, or an engine overheat alarm. It is best practice to replace the impeller annually or every 100 hours, whichever comes first, to prevent cooling system failures.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs everything I need for a full service included?\u003c\/summary\u003e\n  \u003cp\u003eYes, this kit includes engine oil, gear oil, a spark plug, a complete water pump kit, and all the required gaskets and seals for a comprehensive 100-hour service. No additional parts should be necessary for routine maintenance.\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). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \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\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\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50647201907003,"sku":"KITMER2.5","price":79.99,"currency_code":"USD","in_stock":false}]},{"product_id":"priming-pump-assembly-fits-mercury-marine-2-5-300-hp-replaces-895124","title":"Aftermarket Priming Pump Assembly for Mercury 8 and 9.9 HP 4-Stroke Outboards – OEM 895124","description":"\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;\n    word-break:normal;\n    letter-spacing:normal;\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\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003ePriming Pump Assembly\u003c\/strong\u003e is an aftermarket replacement component for manually priming the fuel system on selected Mercury 8 HP and 9.9 HP 4-Stroke outboard engines. The assembly is listed in Mercury parts-catalog applications under OEM part number \u003cstrong\u003e895124\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cp\u003eUse the model, stroke, and serial-number conditions below to compare your engine with the documented applications before ordering. This listing is for the priming pump assembly only.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eAftermarket replacement for Mercury OEM part number 895124.\u003c\/li\u003e\n    \u003cli\u003eUsed to manually prime the fuel system before starting the engine.\u003c\/li\u003e\n    \u003cli\u003eApplicable to selected Mercury 8 HP and 9.9 HP 4-Stroke outboards.\u003c\/li\u003e\n    \u003cli\u003eVerify the original part number, engine model, and serial number before installation.\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 compare the documented OEM reference for this replacement assembly.\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 Marine\u003c\/td\u003e\n          \u003ctd\u003e895124\u003c\/td\u003e\n          \u003ctd\u003eOEM reference\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\u003eThe documented catalog applications below keep the engine model, horsepower, stroke, and serial-number conditions together. A general horsepower range or model-family match is not sufficient 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\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\u003eSerial Number\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\u003e8 (4-STROKE) (209cc)\u003c\/td\u003e\n          \u003ctd\u003e8 HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0R042475 and up\u003c\/td\u003e\n          \u003ctd\u003e895124\u003c\/td\u003e\n          \u003ctd\u003eCatalog-listed priming pump assembly; cowling applications include handle models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e8 (4-STROKE) (209cc)\u003c\/td\u003e\n          \u003ctd\u003e8 HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0P325500 and up\u003c\/td\u003e\n          \u003ctd\u003e895124\u003c\/td\u003e\n          \u003ctd\u003eCatalog-listed priming pump assembly; cowling applications include handle models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e9.9 (4-STROKE) (209cc)\u003c\/td\u003e\n          \u003ctd\u003e9.9 HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0R042475 and up\u003c\/td\u003e\n          \u003ctd\u003e895124\u003c\/td\u003e\n          \u003ctd\u003eCatalog-listed priming pump assembly; cowling applications include handle models.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e9.9 (4-STROKE) (209cc)\u003c\/td\u003e\n          \u003ctd\u003e9.9 HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0P325500 and up\u003c\/td\u003e\n          \u003ctd\u003e895124\u003c\/td\u003e\n          \u003ctd\u003eCatalog-listed priming pump assembly; cowling applications include handle models.\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\u003ePriming pump assembly\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eSelected Mercury 8 HP and 9.9 HP 4-Stroke outboards\u003c\/dd\u003e\n    \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n    \u003cdd\u003eMercury Marine 895124\u003c\/dd\u003e\n    \u003cdt\u003eFuel System Function\u003c\/dt\u003e\n    \u003cdd\u003eManual fuel-system priming before engine startup\u003c\/dd\u003e\n    \u003cdt\u003eProduct Status\u003c\/dt\u003e\n    \u003cdd\u003eAftermarket replacement; not an OEM-manufactured component\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 Aftermarket priming pump assembly\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eFuel lines, mounting hardware, and other engine components are not included unless specifically shown or stated in the product options.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003cp\u003eAlways consult the engine’s service manual before beginning work. The following steps are a general guide and may vary by engine configuration:\u003c\/p\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\u003eDisconnect the battery or follow the service manual’s starting-system safety procedure, where applicable.\u003c\/li\u003e\n    \u003cli\u003eRelieve fuel-system pressure as specified by the service manual and keep suitable rags available for fuel spillage.\u003c\/li\u003e\n    \u003cli\u003eIdentify the existing priming pump assembly and note the fuel-line routing and flow direction.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the fuel lines from the old assembly using appropriate tools and precautions.\u003c\/li\u003e\n    \u003cli\u003eRemove the mounting hardware, if fitted, and take out the old assembly.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement assembly in the same orientation and secure it using the original or specified hardware.\u003c\/li\u003e\n    \u003cli\u003eReconnect the fuel lines securely and confirm that their routing is not kinked or strained.\u003c\/li\u003e\n    \u003cli\u003ePrime the fuel system according to the engine service procedure.\u003c\/li\u003e\n    \u003cli\u003eInspect every connection for fuel leakage before starting or operating 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\n    \u003csummary\u003eHow do I know if my priming pump needs replacing?\u003c\/summary\u003e\n    \u003cp\u003eCommon symptoms can include a primer bulb or pump that will not become firm, visible cracking, fuel leakage, loss of prime, or difficult starting caused by inadequate fuel delivery. Inspect the complete fuel system before replacing the assembly.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a direct fit for every Mercury outboard?\u003c\/summary\u003e\n    \u003cp\u003eNo. The documented applications are selected Mercury 8 HP and 9.9 HP 4-Stroke models with the serial-number conditions shown above. Do not use the former broad 2.5–60 HP claim as a fitment guide. Verify that your original assembly or parts catalog references OEM number 895124 and that your model and serial number match.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the function of a priming pump?\u003c\/summary\u003e\n    \u003cp\u003eA priming pump is used to move fuel through the fuel system before starting. Operating the primer helps fill the system and supply fuel to the engine when the system has lost prime or the engine has not been operated for some time.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat can cause a primer pump to fail?\u003c\/summary\u003e\n    \u003cp\u003eAge, fuel exposure, ultraviolet exposure, heat, contamination, and repeated flexing can contribute to hardening, cracking, leakage, or loss of pumping action. The fuel lines and connections should also be checked during diagnosis.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\n    \u003cp\u003eNo. This listing is for an aftermarket replacement assembly that references Mercury OEM part number 895124. Mercury is a trademark of its respective owner and is used only to identify the documented application.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat should I verify before ordering?\u003c\/summary\u003e\n    \u003cp\u003eCompare the original assembly, OEM reference number, engine model, horsepower, stroke, and complete serial number with the compatibility information above. If any of these details differ, consult the engine parts catalog or a qualified marine technician before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFuel is flammable. Work in a ventilated area away from sparks, flames, hot surfaces, and smoking materials.\u003c\/li\u003e\n    \u003cli\u003eRelieve or contain fuel safely and clean any spilled fuel before starting the engine.\u003c\/li\u003e\n    \u003cli\u003eVerify the application against the original part and complete engine serial number; do not rely on horsepower alone.\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 procedure or fuel-system condition is uncertain.\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 practical service applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Support\u003c\/strong\u003e — Product information is organized around documented model, stroke, and serial-number conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We aim to provide dependable replacement options with clear application information.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270783803,"sku":"JFP-3458","price":28.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/JFP-3458.png?v=1762958718"},{"product_id":"water-pump-impeller-fits-mercury-mariner-2-6-hp-outboards-replaces-47-16154-369650211","title":"Water Pump Impeller for Mercury\/Mariner 2–6 HP Outboards – Replaces Mercury 47-16154, 47-16154-3 and Sierra 18-3098","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 as a replacement for selected Mercury and Mariner small outboard engines from 2 to 6 HP. The listed applications include Mercury\/Mariner 2-stroke models from 1987–2006 and 4-stroke models from 1999–2006. Confirm the exact engine model, stroke, year and serial-number range before ordering.\u003c\/p\u003e\n\u003cp\u003eThis impeller is listed as a replacement for Mercury part numbers \u003cstrong\u003e47-16154\u003c\/strong\u003e and \u003cstrong\u003e47-16154-3\u003c\/strong\u003e, and Sierra part number \u003cstrong\u003e18-3098\u003c\/strong\u003e. These references identify replacement relationships; they do not mean the part is manufactured by Mercury or Sierra.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for direct installation on the water-pump drive shaft when the listed application and dimensions match.\u003c\/li\u003e\n  \u003cli\u003eMolded neoprene impeller material helps maintain water flow through the cooling system.\u003c\/li\u003e\n  \u003cli\u003ePackage includes one impeller and one mounting pin\/drive key.\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 Cross-Reference\"\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\u003e47-16154\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3098\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 application information below must be checked as a complete combination of brand, model or serial range, horsepower, stroke and year. Do not rely on horsepower alone.\u003c\/p\u003e\n\n\u003ch3\u003eMercury\/Mariner 2-Stroke Outboards\u003c\/h3\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner 2-Stroke Outboard Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or Serial Range\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\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\u003e0T884302 and up\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0G710613 and up\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0G710613–0T894438\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0T894439 and up\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P017000–0P400999\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P401000 and up\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0G710613–0T894438\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0T894439 and up\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P017000–0P400999\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P401000 and up\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e3.3 HP with shift\u003c\/td\u003e\n\u003ctd\u003e3.3\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0D901217 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e1-cylinder models\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0A809601 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e1-cylinder models\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0A809601 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eMercury\/Mariner 4-Stroke Outboards\u003c\/h3\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner 4-Stroke Outboard Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or Serial Range\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\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\u003eCarbureted, 0R131842 and up\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eCarbureted, 0R131842 and up\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eCarbureted, 0R131842 and up\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P073456 and up\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P073456 and up\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e0P073456 and up\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eModel not specified\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0R411838 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eModel not specified\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0R411838 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eModel not specified\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0R411838 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eModel not specified\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-161838 and up\u003c\/td\u003e\n\u003ctd\u003eSerial 0R411838 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eModel not specified\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2006\u003c\/td\u003e\n\u003ctd\u003e47-16154\u003c\/td\u003e\n\u003ctd\u003eSerial 0R411838 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\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected Mercury and Mariner 2–6 HP outboards\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect drive-shaft installation when application and dimensions match\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n\u003cdd\u003e33.8 mm (1.33 in)\u003c\/dd\u003e\n  \u003cdt\u003eInternal Shaft Diameter\u003c\/dt\u003e\n\u003cdd\u003e10.4 mm (0.41 in)\u003c\/dd\u003e\n  \u003cdt\u003eHeight\u003c\/dt\u003e\n\u003cdd\u003e14.2 mm (0.56 in)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e7.9 g (0.28 oz)\u003c\/dd\u003e\n  \u003cdt\u003eDrive Connection\u003c\/dt\u003e\n\u003cdd\u003eShaft-mounted with included pin\/drive key\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\u003c\/li\u003e\n  \u003cli\u003e1 × Mounting pin\/drive key\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 battery, where fitted, to prevent accidental starting.\u003c\/li\u003e\n  \u003cli\u003ePlace the outboard gear selector in neutral.\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 housing to access the old impeller.\u003c\/li\u003e\n  \u003cli\u003eRecord the old vane orientation and remove the impeller and drive pin\/key.\u003c\/li\u003e\n  \u003cli\u003eClean the pump housing and wear plate. Replace worn or damaged pump components before installation.\u003c\/li\u003e\n  \u003cli\u003eInstall the included drive pin\/key in the shaft groove.\u003c\/li\u003e\n  \u003cli\u003eFit the new impeller over the shaft and rotate it in the correct direction to pre-bend the vanes.\u003c\/li\u003e\n  \u003cli\u003eApply a light film of clean water or suitable marine assembly lubricant to the impeller and housing. Do not run a dry impeller.\u003c\/li\u003e\n  \u003cli\u003eReinstall the water-pump housing and tighten fasteners to the manufacturer’s specification.\u003c\/li\u003e\n  \u003cli\u003eReattach the lower unit and test the cooling-water flow in a safe water supply before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm whether this impeller fits my engine?\u003c\/summary\u003e\u003cp\u003eCompare the complete engine model, serial number, horsepower, stroke and year with the compatibility tables. Also compare the old impeller’s dimensions and drive-pin arrangement. If any detail differs, consult the engine service manual or a qualified marine technician before ordering.\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 overheating at idle or low speed, a weak or missing telltale stream, reduced cooling-water flow, and cracked, stiff or damaged rubber vanes when the impeller is inspected.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller during routine service and replace it when the vanes are damaged, permanently set, cracked or hardened. Replacement intervals depend on engine use and water conditions, especially salt, sand and silt exposure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the included pin necessary?\u003c\/summary\u003e\u003cp\u003eYes. The pin acts as the drive key that locks the impeller to the shaft. Install the impeller with the correct pin in place and do not operate the water pump without it.\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, Mariner and Sierra are referenced only to identify compatible engines and replacement part numbers; this product is not manufactured or branded by those companies.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat should I do if the new impeller does not fit?\u003c\/summary\u003e\u003cp\u003eDo not force the impeller onto the shaft or into the housing. Recheck the engine serial range, original part number, shaft diameter, overall dimensions and drive-pin arrangement before installation.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete application and physical dimensions before purchase.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the starting system before servicing the lower unit.\u003c\/li\u003e\n  \u003cli\u003eNever operate the engine without an adequate water supply to the cooling system.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump housing, wear plate, seals and related components while replacing the impeller.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when lower-unit service is unfamiliar.\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 service and repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Compatibility references are provided to help match the part to the correct engine.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport for Installation\u003c\/strong\u003e — Check the engine service manual for model-specific removal, installation and torque procedures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723790455099,"sku":"AQ-BY1S-YMPM","price":17.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/AQ-BY1S-YMPM.png?v=1763031862"},{"product_id":"carburetor-fits-mercury-tohatsu-nissan-2-6-hp-replaces-3r1-03200-1-853720t25","title":"Aftermarket Carburetor for Mercury, Mariner, Tohatsu \u0026 Nissan 2–6 HP 4-Stroke Outboards – Replaces 3R1-03200-1, 853720T25","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 for Mercury, Mariner, Tohatsu, and Nissan 2–6 HP 4-stroke outboards\u003c\/strong\u003e is designed as a replacement for engines that use the applicable part numbers listed below. A properly matched replacement carburetor helps restore consistent fuel delivery, starting performance, idle quality, and throttle response.\u003c\/p\u003e\n\u003cp\u003eThis carburetor is listed as an interchange for Mercury part numbers \u003cstrong\u003e853720T25\u003c\/strong\u003e and \u003cstrong\u003e803819T03\u003c\/strong\u003e, and for Tohatsu and Nissan references \u003cstrong\u003e3R1-03200-1\u003c\/strong\u003e, \u003cstrong\u003e3AS-03200-0\u003c\/strong\u003e, and \u003cstrong\u003e3GV-03200-0\u003c\/strong\u003e. Confirm the number on your original carburetor and compare the mounting arrangement before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAftermarket replacement for selected small 4-stroke outboard applications.\u003c\/li\u003e\n  \u003cli\u003eDesigned for direct replacement where the original part number and configuration match.\u003c\/li\u003e\n  \u003cli\u003eSupports consistent air-and-fuel delivery for normal engine operation.\u003c\/li\u003e\n  \u003cli\u003eSuitable for gasoline-fueled outboard engines within the listed application range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to help compare the replacement with your original carburetor. Part-number matching is recommended because model, production year, serial number, and configuration can affect fitment.\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\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 \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e853720T25\u003c\/td\u003e\n\u003ctd\u003eListed replacement reference; also associated with 803819T03.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e803819T03\u003c\/td\u003e\n\u003ctd\u003eAdditional replacement reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003ctd\u003eListed replacement reference; also associated with 3AS-03200-0 and 3GV-03200-0.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3AS-03200-0\u003c\/td\u003e\n\u003ctd\u003eAdditional replacement reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e3GV-03200-0\u003c\/td\u003e\n\u003ctd\u003eAdditional replacement 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 replacement is intended for selected \u003cstrong\u003e2–6 HP 4-stroke\u003c\/strong\u003e Mercury, Mariner, Tohatsu, and Nissan outboards. The application examples below are provided as a guide only. Verify the original carburetor part number, mounting pattern, linkage arrangement, fuel connections, and engine identification before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\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\u003eApplicable Reference\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\u003eSelected small outboard applications\u003c\/td\u003e\n\u003ctd\u003e2–6 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e853720T25 \/ 803819T03\u003c\/td\u003e\n\u003ctd\u003eConfirm the original part number and configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMF3.5\u003c\/td\u003e\n\u003ctd\u003e3.5 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003ctd\u003eConfirm the original part number before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS4\u003c\/td\u003e\n\u003ctd\u003e4 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003ctd\u003eConfirm the original part number before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS5\u003c\/td\u003e\n\u003ctd\u003e5 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003ctd\u003eConfirm the original part number before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNFS4\u003c\/td\u003e\n\u003ctd\u003e4 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003ctd\u003eConfirm the original part number before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNFS5\u003c\/td\u003e\n\u003ctd\u003e5 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003ctd\u003eConfirm the original part number before ordering.\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 table does not establish fitment for every engine in a horsepower or model family. Year, serial-number range, carburetor design, and linkage configuration may vary. Do not use this part on a 2-stroke engine.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eAftermarket carburetor assembly\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected Mercury, Mariner, Tohatsu, and Nissan 2–6 HP 4-stroke outboards\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement where the original part number and configuration match\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect-mount replacement design\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMetal alloy construction\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\/metallic\u003c\/dd\u003e\n  \u003cdt\u003eReplacement References\u003c\/dt\u003e\n\u003cdd\u003e853720T25, 803819T03, 3R1-03200-1, 3AS-03200-0, and 3GV-03200-0\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Carburetor assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e The mounting gasket and any other installation hardware are not included unless specifically shown or stated in the product package. Reuse of an old gasket is not recommended if it is worn, compressed, cracked, or damaged.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn off the engine, allow it to cool, and follow the applicable service-manual safety procedures. Disconnect the fuel supply before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the engine cowling and document the routing of all hoses, wires, and linkages before removing the original carburetor.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the throttle or choke linkage and fuel hose carefully. Prevent dirt from entering the intake or fuel system.\u003c\/li\u003e\n  \u003cli\u003eRemove the mounting fasteners and old carburetor. Clean the mounting surface without allowing debris to enter the engine.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement using a suitable new gasket if required. Tighten the fasteners evenly to the engine manufacturer’s specified torque.\u003c\/li\u003e\n  \u003cli\u003eReconnect every hose and linkage in its original position. Confirm that the throttle and choke operate freely without binding.\u003c\/li\u003e\n  \u003cli\u003eReconnect the fuel supply, prime the system as applicable, and inspect for leaks before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eStart and test the engine in a safe, properly ventilated environment. Follow the manufacturer’s adjustment and break-in procedures if applicable.\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 my carburetor may need replacement?\u003c\/summary\u003e\u003cp\u003eHard starting, unstable idle, stalling, poor acceleration, fuel leakage, or abnormal exhaust smoke can have several causes, including contaminated fuel, restricted passages, ignition problems, or incorrect adjustment. Diagnose the fuel and ignition systems before replacing the carburetor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this carburetor fit a 2-stroke outboard?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for selected 4-stroke applications. It should not be installed on a 2-stroke engine.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCompare the number on your original carburetor with the listed references, then compare the mounting points, fuel connections, linkage, and overall appearance. Also verify the engine brand, model, horsepower, stroke, and any available serial-number information.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the package include a mounting gasket?\u003c\/summary\u003e\u003cp\u003eNo. The package includes the carburetor assembly only. A suitable mounting gasket should be obtained separately when required.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill adjustment be required after installation?\u003c\/summary\u003e\u003cp\u003eAdjustment requirements depend on the engine and the replacement assembly. Follow the engine manufacturer’s service instructions, and do not change mixture or idle settings beyond the manufacturer’s specifications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between an OEM and an aftermarket part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement, not an original manufacturer part. Confirm the part number and physical configuration before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow should the fuel system be maintained?\u003c\/summary\u003e\u003cp\u003eUse clean, fresh fuel, keep water and debris out of the fuel system, follow the engine manufacturer’s storage procedure, and inspect fuel lines and filters regularly. Stabilize or drain fuel as recommended for seasonal storage.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original part number and physical configuration before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on horsepower alone to determine compatibility; model, year, serial range, stroke, and configuration may affect fitment.\u003c\/li\u003e\n  \u003cli\u003eUse the correct gasket and installation torque for your engine.\u003c\/li\u003e\n  \u003cli\u003eCheck carefully for fuel leaks before operating the engine.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if you are unfamiliar with outboard fuel systems.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement part, not an OEM component.\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 replacement components for a range of recreational and commercial marine applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings:\u003c\/strong\u003e Product references and application information are provided to help customers compare replacement parts with their original components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport:\u003c\/strong\u003e If you are unsure about compatibility, compare your original part and engine identification information before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723790553403,"sku":"3R14BbxYGGG","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/3R14BbxYGGG.png?v=1763031866"},{"product_id":"carburetor-fits-mercury-mariner-2-6-hp-tohatsu-nissan-mfs-nfs-3-5-6-hp-4-stroke-outboards-replaces-3r1-03200-1-853720t25","title":"Carburetor for Mercury\/Mariner 2.5–6 HP and Tohatsu\/Nissan MFS\/NFS 3.5–6 HP 4-Stroke Outboards — Replaces 3R1-03200-1 and 853720T25","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\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket replacement \u003cstrong\u003ecarburetor assembly\u003c\/strong\u003e is designed for selected Mercury and Mariner 4-stroke outboards from 2.5 to 6 HP, as well as selected Tohatsu and Nissan MFS\/NFS 4-stroke models from 3.5 to 6 HP. It is intended to restore proper fuel metering and dependable engine operation when the original carburetor is worn, contaminated, damaged, or leaking.\u003c\/p\u003e\n\u003cp\u003eThis carburetor is listed as a replacement for several manufacturer part numbers, including Mercury\/Mariner 853720T25, 8M0053670, 803522T03, and Tohatsu\/Nissan 3R1-03200-1. Confirm the model, horsepower, stroke type, engine serial range, mounting arrangement, and part number of your original carburetor before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect OEM-style replacement for the listed applications.\u003c\/li\u003e\n\u003cli\u003eMetal die-cast housing designed for use in marine environments.\u003c\/li\u003e\n\u003cli\u003eHelps provide the correct air-fuel mixture for starting, idling, acceleration, and normal operation.\u003c\/li\u003e\n\u003cli\u003eVerify the original part and mounting details before installation; model and year variations may exist.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are listed as replacement or reference numbers for this carburetor. They are not the internal product identifier.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\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\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522T1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522T2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522T03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522T04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522T05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522T06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e803522A04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e8M0053670\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e853720T25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e898103T51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e889246T10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\/Nissan\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\/Nissan\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\/Nissan\u003c\/td\u003e\n\u003ctd\u003e3AS-03200-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\/Nissan\u003c\/td\u003e\n\u003ctd\u003e3GV-03200-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eUse the following applications as a reference. Always compare the engine identification label and the existing carburetor before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner 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\u003eReference Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eF2.5\/2.5M\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e853720T25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eF3.5\/3.5M\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e853720T25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eF4\/4M\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e803522T03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eF5\/5M\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e803522T03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eF6\/6M\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e803522T03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eSelected Tohatsu and Nissan MFS\/NFS 4-stroke outboards in the 3.5–6 HP range are also listed for this replacement. The model and part-number references below should be checked against the engine identification and original component.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\u003ctable class=\"ss-table\" aria-label=\"Tohatsu and Nissan 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\u003eReference Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMF3.5\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS5\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNFS4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNFS5\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e3R1-03200-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCarburetor assembly\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected 4-stroke marine outboards\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n\u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n\u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eIntake manifold mount\u003c\/dd\u003e\n\u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMetal, die-cast aluminum\u003c\/dd\u003e\n\u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\/machined\u003c\/dd\u003e\n\u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eReplacement flange\u003c\/dd\u003e\n\u003cdt\u003eFunction\u003c\/dt\u003e\n\u003cdd\u003eFuel and air metering for smooth combustion and reliable engine operation\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Carburetor assembly\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eAllow the engine to cool, shut off the fuel supply, and follow the engine manufacturer's safety procedures.\u003c\/li\u003e\n\u003cli\u003ePlace an absorbent rag below the carburetor to catch spilled fuel.\u003c\/li\u003e\n\u003cli\u003eDisconnect the fuel line and any applicable electrical connections.\u003c\/li\u003e\n\u003cli\u003eRemove the airbox cover and air filter assembly as necessary for access.\u003c\/li\u003e\n\u003cli\u003eDisconnect the throttle and choke linkages, noting their original positions.\u003c\/li\u003e\n\u003cli\u003eRemove the fasteners securing the carburetor to the intake manifold.\u003c\/li\u003e\n\u003cli\u003eRemove the old carburetor without damaging the intake surface or adjacent components.\u003c\/li\u003e\n\u003cli\u003eClean the mounting surface and remove old gasket material and debris.\u003c\/li\u003e\n\u003cli\u003eInstall the replacement carburetor with the correct gasket and tighten the fasteners evenly to the manufacturer's specification.\u003c\/li\u003e\n\u003cli\u003eReconnect the linkages, fuel line, airbox, and other removed components.\u003c\/li\u003e\n\u003cli\u003eTurn on the fuel supply, prime the system if required, and inspect carefully for leaks before starting.\u003c\/li\u003e\n\u003cli\u003eStart and run the engine in a safe, well-ventilated area while checking idle and throttle response.\u003c\/li\u003e\n\u003c\/ol\u003e\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, exact model, horsepower, 4-stroke designation, serial information, mounting arrangement, and original carburetor part number with the information above. A visual comparison of the replacement and original components is also recommended. If any important detail differs, do not install the part without further confirmation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a failing carburetor?\u003c\/summary\u003e\u003cp\u003eSymptoms may include hard starting, rough or unstable idle, stalling at low speed, poor acceleration, increased fuel consumption, black exhaust smoke, or fuel leakage around the carburetor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill adjustment be required after installation?\u003c\/summary\u003e\u003cp\u003eThis is intended as a direct-fit replacement, but idle speed or mixture adjustment may be required depending on the engine, fuel condition, operating altitude, and installation. Follow the engine manufacturer's adjustment procedure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow should the carburetor be maintained?\u003c\/summary\u003e\u003cp\u003eUse fresh fuel and an appropriate stabilizer when required. Inspect fuel lines and connections regularly for deterioration or leaks. For extended storage, follow the engine manufacturer's procedure for draining or stabilizing the fuel system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement carburetor, not an original equipment manufacturer component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping and warranty terms?\u003c\/summary\u003e\u003cp\u003eShipping availability, delivery estimates, warranty coverage, and return conditions are determined by the applicable order and store policies. Review the current policy information at checkout or contact support before ordering if these terms are important to your purchase.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGasoline is flammable. Work in a well-ventilated area away from ignition sources.\u003c\/li\u003e\n\u003cli\u003eVerify the engine model, horsepower, stroke type, serial information, and original part before purchase.\u003c\/li\u003e\n\u003cli\u003eDo not operate the engine if fuel leaks are present.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when you are not familiar with marine fuel systems.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\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 — Marine replacement parts selected for dependable service in real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Shipping options and delivery estimates are shown according to the destination and current order terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Practical replacement solutions with attention to fit, materials, and quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723790586171,"sku":"1A-NJHV-44RU","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/1A-NJHV-44RU.png?v=1763031868"},{"product_id":"water-pump-impeller-repair-kit-fits-mercury-tohatsu-2-3-5-hp-replaces-16159a2-8m0080264-3ab-87322-0","title":"Water Pump Repair Kit for Mercury 3.3 HP 2-Stroke and Tohatsu MFS2–MFS3.5 4-Stroke Outboards – Replaces 16159A2, 8M0080264 and 3AB-87322-0","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 { 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\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit\u003c\/strong\u003e is an aftermarket replacement for selected small Mercury and Tohatsu outboard water-pump assemblies. Catalog references identify the Mercury application around 3.3 HP 2-stroke outboards, including shiftable engines, and the Tohatsu application for MFS2, MFS2.5 and MFS3.5B\/C 4-stroke models. Always match the complete OEM part number and engine serial or model information before ordering.\u003c\/p\u003e\n  \u003cp\u003eThe kit is intended to replace water-pump service components associated with Mercury references \u003cstrong\u003e16159A2\u003c\/strong\u003e, \u003cstrong\u003e8M0080264\u003c\/strong\u003e and \u003cstrong\u003e889246A16\u003c\/strong\u003e, together with Tohatsu reference \u003cstrong\u003e3AB-87322-0\u003c\/strong\u003e. The listed numbers are manufacturer or OEM reference numbers only; this product is not an OEM-branded part.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eReplacement water-pump service kit for selected small outboards.\u003c\/li\u003e\n    \u003cli\u003eDesigned for servicing the impeller, wear surfaces and associated gaskets in the applicable pump assembly.\u003c\/li\u003e\n    \u003cli\u003eIncludes a six-blade impeller with a nylon hub.\u003c\/li\u003e\n    \u003cli\u003eConfirm the reference number, engine model, stroke, year and serial range before installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse the following references to compare the required water-pump repair kit with your original part or service-manual listing.\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\u003eManufacturer or OEM Reference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mercury Mariner\u003c\/td\u003e\n\u003ctd\u003e16159A2\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mercury Mariner\u003c\/td\u003e\n\u003ctd\u003e47-16159A2\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mercury Mariner\u003c\/td\u003e\n\u003ctd\u003e8M0080264\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mercury Mariner\u003c\/td\u003e\n\u003ctd\u003e47-8M0080264\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mercury Mariner\u003c\/td\u003e\n\u003ctd\u003e889246A16\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mercury Mariner\u003c\/td\u003e\n\u003ctd\u003e47-889246A16\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3AB-87322-0\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3AB873220M\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3F0-87322-1\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3F0873221M\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\u003eFitment depends on the complete engine configuration. Model, horsepower, stroke and serial conditions must be checked together; a matching horsepower alone does not confirm compatibility.\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 or Serial Condition\u003c\/th\u003e\n\u003cth\u003eReference\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\u003e3.3 HP outboard\u003c\/td\u003e\n          \u003ctd\u003e3.3 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0D901217 through 0G710612\u003c\/td\u003e\n          \u003ctd\u003e8M0080264\u003c\/td\u003e\n          \u003ctd\u003eCatalog occurrence identifies shiftable engines.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3.3 HP outboard\u003c\/td\u003e\n          \u003ctd\u003e3.3 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0G710613 through 0T894576\u003c\/td\u003e\n          \u003ctd\u003e8M0080264\u003c\/td\u003e\n          \u003ctd\u003eVerify the exact serial number and pump configuration.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3.3 HP outboard\u003c\/td\u003e\n          \u003ctd\u003e3.3 HP\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0T894577 and up\u003c\/td\u003e\n          \u003ctd\u003e8M0080264\u003c\/td\u003e\n          \u003ctd\u003eVerify the exact serial number and pump configuration.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\u003c\/td\u003e\n          \u003ctd\u003eMFS2 \/ MFS2.5 \/ MFS3.5B\u003c\/td\u003e\n          \u003ctd\u003e2–3.5 HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2016–2019 catalog applications\u003c\/td\u003e\n          \u003ctd\u003e3AB-87322-0\u003c\/td\u003e\n          \u003ctd\u003eCheck the model suffix and service-manual listing.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\u003c\/td\u003e\n          \u003ctd\u003eMFS2 \/ MFS2.5 \/ MFS3.5C\u003c\/td\u003e\n          \u003ctd\u003e2–3.5 HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2019–2026 catalog applications\u003c\/td\u003e\n          \u003ctd\u003e3AB-87322-0\u003c\/td\u003e\n          \u003ctd\u003eCheck the model suffix and service-manual listing.\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 catalog references above are application leads, not a substitute for checking the original part. Mercury and Tohatsu\/Nissan model naming, serial breaks and pump designs can vary by production year and market.\u003c\/p\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n    \u003cdd\u003eWater pump repair kit\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eSelected Mercury and Tohatsu small outboard water-pump assemblies\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n    \u003cdd\u003eDirect replacement service components; professional installation is recommended\u003c\/dd\u003e\n    \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n    \u003cdd\u003eMarine-grade CR neoprene\u003c\/dd\u003e\n    \u003cdt\u003eWear Plate and Liner Material\u003c\/dt\u003e\n    \u003cdd\u003eSS316 stainless steel\u003c\/dd\u003e\n    \u003cdt\u003eImpeller Dimensions\u003c\/dt\u003e\n    \u003cdd\u003eHeight: 14.35 mm (0.56 in); overall diameter: 33.6 mm (1.32 in); hub shaft diameter: 10.4 mm (0.41 in)\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n    \u003cdd\u003e57 g (2.01 oz)\u003c\/dd\u003e\n    \u003cdt\u003eImpeller Design\u003c\/dt\u003e\n    \u003cdd\u003eSix-blade impeller with nylon hub\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 (47-161543)\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller pin (28-16155)\u003c\/li\u003e\n    \u003cli\u003e1 x Housing gasket (27-898101331)\u003c\/li\u003e\n    \u003cli\u003e1 x Wear plate gasket (27-898101332)\u003c\/li\u003e\n    \u003cli\u003e1 x Wear plate (898101371)\u003c\/li\u003e\n    \u003cli\u003e1 x Insert cup (161571)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003ePart numbers in the package list are component or reference numbers and may differ from the package's primary application number. Compare the components with the parts removed from your engine before installation.\u003c\/p\u003e\n\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eMake sure the engine is stopped, cool and secured. Disconnect the battery where applicable and follow the engine manufacturer's safety instructions.\u003c\/li\u003e\n    \u003cli\u003eRemove the gearcase or lower unit according to the applicable service manual.\u003c\/li\u003e\n    \u003cli\u003eRemove the water-pump housing and note the original impeller-vane direction and component order.\u003c\/li\u003e\n    \u003cli\u003eRemove the old impeller, pin or key, wear plate and gaskets. Clean the mating surfaces without damaging the housing or driveshaft.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement wear plate and gaskets in the same orientation as the original components.\u003c\/li\u003e\n    \u003cli\u003eFit the new impeller onto the driveshaft, align the key or pin, and rotate the driveshaft in its normal operating direction while lowering the housing so the vanes seat correctly.\u003c\/li\u003e\n    \u003cli\u003eFasten the pump housing using the manufacturer's specified hardware and torque procedure.\u003c\/li\u003e\n    \u003cli\u003eReinstall the lower unit, ensuring correct alignment of the driveshaft, shift shaft and water tube where applicable.\u003c\/li\u003e\n    \u003cli\u003eRun the engine only in water or with an appropriate flushing attachment. Confirm cooling-water flow and check for leaks before normal operation.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow can I confirm that this kit fits my outboard?\u003c\/summary\u003e\n    \u003cp\u003eCompare the complete OEM reference, engine brand, model, horsepower, stroke and serial or year condition. For Mercury applications, the catalog references center on selected 3.3 HP 2-stroke engines. For Tohatsu applications, reference 3AB-87322-0 is associated with selected MFS2, MFS2.5 and MFS3.5B\/C 4-stroke models. If any detail differs, confirm the required kit with the engine service manual or a qualified marine dealer.\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 weak or intermittent tell-tale flow, overheating at idle or low speed, reduced cooling-water output, or an impeller that is cracked, brittle, deformed or missing vane material during inspection.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect the water-pump impeller according to the engine manufacturer's maintenance schedule. Service intervals depend on operating hours, storage conditions and whether the engine is used in saltwater, sand or silty water. Replace it sooner if damage or overheating symptoms are present.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this kit if my serial number is outside the listed range?\u003c\/summary\u003e\n    \u003cp\u003eDo not assume fitment from horsepower alone. Serial-number changes can correspond to different gearcase or water-pump components. Check the complete original part number and the applicable service-manual diagram before ordering.\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 interchange with the manufacturer references listed on this page. Mercury, Mariner and Tohatsu reference numbers are used only for identification and compatibility comparison.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the shipping options?\u003c\/summary\u003e\n    \u003cp\u003eAvailable shipping methods and delivery estimates are shown at checkout and may vary by destination, carrier and inventory location.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n    \u003cp\u003eWarranty coverage and returns are governed by the seller's current policy. Contact customer support before returning a product and keep the order information and original packaging available.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the original part, engine model, stroke, year and serial range before purchase.\u003c\/li\u003e\n    \u003cli\u003eDo not operate an outboard without an adequate cooling-water supply.\u003c\/li\u003e\n    \u003cli\u003eStop operation immediately if the engine overheats or cooling-water flow is weak or absent.\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 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 selected outboard service applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Information\u003c\/strong\u003e — Reference numbers and application details are provided to support careful part comparison.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Shipping availability and delivery estimates are presented at checkout for the destination entered.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723791831355,"sku":"24KM315-QM","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM315-QM.png?v=1763031895"},{"product_id":"water-pump-impeller-fits-mercury-tohatsu-evinrude-2-5-6-hp-4-stroke-2-5-hp-2-stroke-replaces-47-161543-369-65021-1-5040180","title":"Aftermarket Water Pump Impeller for Nissan\/Tohatsu 2–6 HP Outboards and Mercury 2–3.5 HP 4-Stroke Models","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 aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is designed for selected small Nissan\/Tohatsu and Mercury\/Mariner outboard applications. It supports Nissan 3.5B\/NS5B engines, Tohatsu 2-stroke 2 HP, 2.5 HP, 2.5A, 3.5A, 3.5B, 3.5 HP, 4 HP, and 5 HP models, as well as Tohatsu 4-stroke MFS4, MFS5, and MFS6 HP models. The company fitment information also identifies Mercury\/Mariner 4-stroke 2 HP, 2.5 HP, and 3.5 HP carbureted applications.\u003c\/p\u003e\n\u003cp\u003eThe impeller is a direct replacement component for water pump service when its dimensions and original part reference match your engine. Catalog records also associate the primary Tohatsu reference with selected M2\/M2.5\/M3.5, M4\/M5, MFS2\/MFS2.5\/MFS3.5, and MFS4\/MFS5\/MFS6 engine applications. Always confirm the exact model and service information before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle aftermarket water pump impeller.\u003c\/li\u003e\n  \u003cli\u003eSix-blade design for the listed outboard applications.\u003c\/li\u003e\n  \u003cli\u003eInside diameter: 10.25 mm.\u003c\/li\u003e\n  \u003cli\u003eOutside diameter: 33.6 mm.\u003c\/li\u003e\n  \u003cli\u003eWidth: 14.2 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following OEM and aftermarket references are associated with this impeller. A reference number alone does not replace confirmation of the complete engine model and application.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Interchange\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eBrand or Supplier\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\u003e369-65021-1\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e369650211M\u003c\/td\u003e\n\u003ctd\u003eOEM reference format\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-161543\u003c\/td\u003e\n\u003ctd\u003eOEM reference format\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e8M0204676\u003c\/td\u003e\n\u003ctd\u003eReference number\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEvinrude \/ Johnson \/ OMC \/ BRP\u003c\/td\u003e\n\u003ctd\u003e5040180\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\u003e18-3098\u003c\/td\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45302\u003c\/td\u003e\n\u003ctd\u003eAftermarket 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 is application-specific. Keep the horsepower, stroke, model family, and any carburetor or serial-number conditions together when checking your engine. The table below summarizes the applications explicitly identified for this product and related catalog records.\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\u003eModel or Application\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eApplication Notes\u003c\/th\u003e\n        \u003cth\u003eReference\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e3.5B \/ NS5B\u003c\/td\u003e\n\u003ctd\u003e3.5–5\u003c\/td\u003e\n\u003ctd\u003eNot stated in company record\u003c\/td\u003e\n\u003ctd\u003eConfirm exact model designation\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2 HP\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eCompany-listed application\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e2.5 HP; 2.5A; 3.5A; 3.5B\u003c\/td\u003e\n\u003ctd\u003e2.5–3.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eCompany-listed application\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3.5 HP\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eCompany-listed application\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e4 HP \/ 5 HP\u003c\/td\u003e\n\u003ctd\u003e4–5\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eCompany-listed application\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS4 \/ MFS5 \/ MFS6\u003c\/td\u003e\n\u003ctd\u003e4–6\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eCompany-listed application\u003c\/td\u003e\n\u003ctd\u003e369-65021-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e4-stroke 2 HP, 2.5 HP, and 3.5 HP carbureted models\u003c\/td\u003e\n\u003ctd\u003e2–3.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm carburetor version and exact model\u003c\/td\u003e\n\u003ctd\u003e47-16154-3\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\u003eProduct Construction\u003c\/dt\u003e\n  \u003cdd\u003eRubber impeller\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement water pump component\u003c\/dd\u003e\n  \u003cdt\u003eInside Diameter\u003c\/dt\u003e\n  \u003cdd\u003e10.25 mm\u003c\/dd\u003e\n  \u003cdt\u003eOutside Diameter\u003c\/dt\u003e\n  \u003cdd\u003e33.6 mm\u003c\/dd\u003e\n  \u003cdt\u003eWidth\u003c\/dt\u003e\n  \u003cdd\u003e14.2 mm\u003c\/dd\u003e\n  \u003cdt\u003eBlade Configuration\u003c\/dt\u003e\n  \u003cdd\u003e6 blades\u003c\/dd\u003e\n  \u003cdt\u003eQuantity\u003c\/dt\u003e\n  \u003cdd\u003e1 impeller\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 aftermarket water pump impeller\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the engine model, stroke, application details, and original impeller reference before starting work.\u003c\/li\u003e\n  \u003cli\u003eFollow the outboard manufacturer's service procedure for removing the lower unit and water pump housing.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller and inspect the housing, wear plate, key, water tube, and related pump components for damage or corrosion.\u003c\/li\u003e\n  \u003cli\u003eClean debris and corrosion from the pump area before installing the replacement impeller.\u003c\/li\u003e\n  \u003cli\u003eInstall the impeller in the same orientation specified by the service manual. Use only an installation lubricant approved for the application.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water pump and lower unit using the manufacturer's tightening sequence and torque specifications.\u003c\/li\u003e\n  \u003cli\u003eRun the engine only in an appropriate water supply or service tank and verify 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 that this impeller fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eCompare your original impeller's reference number and dimensions, then check the complete engine model, horsepower, stroke, and application details against the compatibility information above. For Mercury\/Mariner models, confirm the 4-stroke 2 HP, 2.5 HP, or 3.5 HP carbureted application. If the model or part details differ, consult the engine service manual before ordering.\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\u003eA weak or missing tell-tale stream, overheating, or visible cracked, brittle, distorted, or missing blades can indicate that the impeller or another cooling-system component requires service.\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 OEM and aftermarket numbers shown above are reference numbers used to help identify applications; the product is not represented as a genuine OEM component.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes the package include a key, gasket, or water pump housing?\u003c\/summary\u003e\n  \u003cp\u003eNo. The package contains one water pump impeller only. A key, gasket, housing, wear plate, or complete water pump kit is not included unless separately stated in the order details.\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 timing depends on the engine manufacturer's maintenance schedule and operating conditions. Inspect the impeller during scheduled water pump service and replace it if the blades show wear, cracking, distortion, or damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original part number, dimensions, engine model, horsepower, and stroke before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on horsepower alone to determine fitment; model family and application details can change the required impeller.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer's service manual for lower-unit removal, installation orientation, torque specifications, and testing procedures.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component and is not a genuine OEM part.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation by a qualified marine technician is recommended when the required service procedure is unfamiliar.\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 routine outboard maintenance and repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Product references and fitment details are presented to help customers compare their original part and engine specifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical Service Support\u003c\/strong\u003e — Follow the engine manufacturer's service instructions for safe installation and reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723801530683,"sku":"17IT001","price":14.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IT0011_0dc8836f-1498-48cd-bd0b-0cdc8bf62f2c.jpg?v=1763032196"}],"url":"https:\/\/seasierra.com\/collections\/mercury-3-5hp-4-stroke-outboard-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}