{"title":"Tohatsu 4-Stroke 25-30HP Outboard Marine Engine","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003e\n    This page focuses on Tohatsu 4-Stroke 25–30HP outboard engines and helps you find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Tohatsu collection any time. Scroll to the bottom of this page to start browsing parts for this engine, and remember you can use the Filter \u0026amp; Sort controls on the collection page to narrow by horsepower, year range, and part category.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/tohatsu-outboard-parts\" style=\"display:inline-block; padding:10px 16px; background:#0a3d62; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Tohatsu Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 25–30HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the identification plate: typically on the transom clamp bracket or swivel bracket. The plate lists model code, serial number, and shaft length.\u003c\/li\u003e\n    \u003cli\u003eRead the model code and suffix: examples include MFS25D \/ MFS30D with suffixes that indicate start type (manual\/electric), control (tiller\/remote), shaft length (15\"\/20\"), and trim options.\u003c\/li\u003e\n    \u003cli\u003eConfirm 4-stroke features: presence of an engine oil fill, dipstick, and external oil filter on the powerhead distinguish it from older 2-strokes.\u003c\/li\u003e\n    \u003cli\u003e25HP vs 30HP: many 25\/30 models share the same 3‑cylinder platform; verify the exact model and serial number to ensure parts compatibility.\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\u003eTohatsu MFS25\/30D Platform\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 #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInline-3 EFI 4‑stroke, approx. 500 cc displacement, through‑prop exhaust, 2.17:1 gear ratio typical for this family.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eMFS25D and MFS30D variants in 15\" (S) and 20\" (L) shafts; manual or electric start; tiller or remote control; some models with power trim\/tilt.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eLight weight for class, strong low‑end torque for planing, quiet operation, and efficient 4‑stroke fuel economy.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMany wear items (filters, plugs, water pump kits) are shared between 25HP and 30HP trims of the same generation; confirm with model code and serial. Propellers typically range from 8\"–14\" pitch depending on application.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 4‑stroke outboards. Always follow the schedule and procedures in your official Tohatsu 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 #ddd; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEngine oil \u0026amp; oil filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse NMMA FC‑W 10W‑30\/40 oil; replace crush washer if applicable; dispose of used oil properly.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect for water intrusion (milky oil) and metal shavings; replace drain\/fill seals.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/tohatsu-lower-unit-seal-kits\"\u003eTohatsu 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 #f0f0f0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect 100 hours; replace 200 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck gap and look for fouling or wear; replace as a set for consistent performance.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace sooner if contaminated fuel or water is suspected; purge air after replacement.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEvery 200 hours or 2–3 seasons\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEssential for cooling; replace sooner if weak tell‑tale or overheat alarms occur.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/tohatsu-water-pump-repair-kits\"\u003eTohatsu Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (internal \u0026amp; external)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect every 50 hours; replace as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace when ~50% consumed; choose the correct material for your water (aluminum, magnesium, or zinc).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp style=\"font-size:12px; color:#666; margin-top:8px;\"\u003e*Intervals are typical for recreational use; severe duty or harsh environments may require shorter intervals.\u003c\/p\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\/tohatsu-outboard-parts\"\u003eTohatsu Outboard Parts\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/tohatsu-water-pump-repair-kits\"\u003eTohatsu Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Seals: \u003ca href=\"https:\/\/seasierra.com\/collections\/tohatsu-lower-unit-seal-kits\"\u003eTohatsu Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion: \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\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 #ddd; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWeak tell‑tale or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect intake screens for blockage; confirm strong water stream; verify thermostat operation; review recent impeller service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWater pump kit, impeller, thermostat, intake screen grommets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck propeller for damage\/cavitation; verify fresh fuel; replace\/inspect fuel filter; check for water in fuel; compression test if needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003ePropeller, fuel filter, fuel pump\/primer bulb, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eVerify battery charge and connections (for electric start); inspect\/replace spark plugs; check for vacuum leaks and stale fuel.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eSpark plugs, fuel filter, electrical connectors, idle‑air\/fuel components\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eGearcase noise or milky gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eDrain gear oil and inspect for water or metal; pressure\/vacuum test gearcase; check prop shaft seal for fishing line damage.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eLower unit seal kit, gear oil, bearings, prop shaft seals\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eBattery not charging (electric‑start models)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMeasure battery voltage at idle and fast idle; inspect fuses, rectifier\/regulator connections, and grounds.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRectifier\/regulator, stator\/alternator output, wiring and fuses\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 25HP and 30HP or different years?\u003c\/summary\u003e\n    \u003cp\u003eMany wear items (filters, spark plugs, anodes, water pump kits) are shared across the MFS25\/30D family. However, variations by year, shaft length, start type, and control options can change part numbers. Always confirm with the model code and serial number.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule, every 200 hours or every 2–3 seasons, whichever comes first. Replace sooner if you run in sandy, silty, or weedy water, or if the tell‑tale is weak or the engine overheats.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change the gear oil?\u003c\/summary\u003e\n    \u003cp\u003eChange gear oil every 100 hours or annually. If you find milky oil (water intrusion) or metal particles, service the lower unit seals and re‑test before further use.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide your full model code (e.g., MFS25D\/MFS30D and suffix), serial number, shaft length, start type (manual\/electric), and whether it is tiller or remote control. Photos of the nameplate and the part you need also help.\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 #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts? Browse the main Tohatsu collection and filter by horsepower, year, and model to quickly narrow your results.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/tohatsu-outboard-parts\" style=\"display:inline-block; padding:10px 16px; background:#0a3d62; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Tohatsu Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; font-size:12px; color:#666;\"\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":"fuel-injector-fits-mercury-tohatsu-25hp-30hp-4-stroke-replaces-8m0091784-898101t74-3ac-10300-1-3ac-10300-0","title":"100% New Fuel Injector for Mercury Mariner and Tohatsu 25–30 HP 4-Stroke EFI Outboards – Replaces 8M0091784, 898101T74, 3AC-10300-1 and 3AC-10300-0","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003e100% new aftermarket fuel injector\u003c\/strong\u003e is designed for specified Mercury Mariner and Tohatsu 25–30 HP EFI 4-stroke outboard applications. It provides a direct replacement for the original fuel injector when the part number and complete engine fitment information match.\u003c\/p\u003e\n  \u003cp\u003eFor Mercury applications, the injector replaces manufacturer part numbers \u003cstrong\u003e8M0091784\u003c\/strong\u003e and \u003cstrong\u003e898101T74\u003c\/strong\u003e. For Tohatsu applications, it replaces \u003cstrong\u003e3AC-10300-1\u003c\/strong\u003e and \u003cstrong\u003e3AC-10300-0\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e100% new aftermarket fuel injector; not a used or remanufactured part.\u003c\/li\u003e\n    \u003cli\u003eSold as one individual fuel injector.\u003c\/li\u003e\n    \u003cli\u003eDesigned for gasoline EFI 4-stroke outboard applications listed below.\u003c\/li\u003e\n    \u003cli\u003eConfirm the original part number, engine model, horsepower, stroke, and serial-number range before ordering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eThe following manufacturer references are associated with this replacement injector. Part-number matching should be used together with the engine fitment information.\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\u003eManufacturer Part Number\u003c\/th\u003e\n          \u003cth\u003eApplication\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n          \u003ctd\u003e8M0091784\u003c\/td\u003e\n          \u003ctd\u003e25 and 30 HP EFI 4-stroke applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n          \u003ctd\u003e898101T74\u003c\/td\u003e\n          \u003ctd\u003e25 and 30 HP EFI 4-stroke applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\u003c\/td\u003e\n          \u003ctd\u003e3AC-10300-1\u003c\/td\u003e\n          \u003ctd\u003eMFS25 and MFS30 4-stroke applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\u003c\/td\u003e\n          \u003ctd\u003e3AC-10300-0\u003c\/td\u003e\n          \u003ctd\u003eListed manufacturer reference for the specified Tohatsu applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eFitment depends on the complete engine configuration. Match the brand, model, horsepower, stroke, and serial-number condition shown below before installation.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel \/ Application\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYears \/ Condition\u003c\/th\u003e\n          \u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n          \u003ctd\u003e25 EFI 3-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e25\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2006–2021; up to serial number 1R154757\u003c\/td\u003e\n          \u003ctd\u003e8M0091784\u003cbr\u003e898101T74\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n          \u003ctd\u003e30 EFI 3-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e30\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2006–2021; up to serial number 1R154757\u003c\/td\u003e\n          \u003ctd\u003e8M0091784\u003cbr\u003e898101T74\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\u003c\/td\u003e\n          \u003ctd\u003eMFS25A, MFS25B, MFS25C\u003c\/td\u003e\n          \u003ctd\u003e25\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify the complete model and serial-number information\u003c\/td\u003e\n          \u003ctd\u003e3AC-10300-1\u003cbr\u003e3AC-10300-0\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTohatsu\u003c\/td\u003e\n          \u003ctd\u003eMFS30A, MFS30B, MFS30C\u003c\/td\u003e\n          \u003ctd\u003e30\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVerify the complete model and serial-number information\u003c\/td\u003e\n          \u003ctd\u003e3AC-10300-1\u003cbr\u003e3AC-10300-0\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\u003eElectronic fuel injector\u003c\/dd\u003e\n    \u003cdt\u003eCondition\u003c\/dt\u003e\n    \u003cdd\u003e100% new aftermarket replacement\u003c\/dd\u003e\n    \u003cdt\u003eFuel System\u003c\/dt\u003e\n    \u003cdd\u003eGasoline electronic fuel injection\u003c\/dd\u003e\n    \u003cdt\u003eEngine Type\u003c\/dt\u003e\n    \u003cdd\u003e4-stroke outboard engines\u003c\/dd\u003e\n    \u003cdt\u003eRated Applications\u003c\/dt\u003e\n    \u003cdd\u003eMercury Mariner and Tohatsu 25–30 HP EFI applications listed above\u003c\/dd\u003e\n    \u003cdt\u003eQuantity\u003c\/dt\u003e\n    \u003cdd\u003eOne fuel injector\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 × 100% new aftermarket fuel injector\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eConfirm the original injector part number and complete engine fitment before beginning work.\u003c\/li\u003e\n    \u003cli\u003eAllow the engine to cool, disconnect the battery, and follow the applicable service manual safety procedures.\u003c\/li\u003e\n    \u003cli\u003eRelieve fuel-system pressure before disconnecting any fuel-system components.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the electrical connector and remove the fuel rail or retaining hardware as specified by the service manual.\u003c\/li\u003e\n    \u003cli\u003eRemove the original injector and inspect the injector seat, retaining hardware, and sealing surfaces.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement injector with the correct seals and retaining components. Do not reuse damaged seals.\u003c\/li\u003e\n    \u003cli\u003eReinstall the fuel rail and electrical connection, tightening all fasteners to the manufacturer’s specified torque.\u003c\/li\u003e\n    \u003cli\u003ePrime the fuel system and inspect carefully for leaks before starting the engine.\u003c\/li\u003e\n    \u003cli\u003eAfter starting, check again for fuel leaks and confirm stable engine operation.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003cp\u003eProfessional installation is recommended because the procedure involves the pressurized fuel system.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I confirm this injector fits my engine?\u003c\/summary\u003e\n    \u003cp\u003eCompare the original injector’s manufacturer part number with the Part Number Matrix, then verify the brand, model, horsepower, 4-stroke configuration, year range, and serial-number condition in the compatibility table. If any of these details differ, confirm fitment with the engine manufacturer or a qualified marine technician.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this injector new or remanufactured?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is for one 100% new aftermarket fuel injector. It is not a used or remanufactured component.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow many injectors are included?\u003c\/summary\u003e\n    \u003cp\u003eOne individual fuel injector is included. If your engine requires multiple injectors, order the quantity needed for your application.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are common symptoms of a failing fuel injector?\u003c\/summary\u003e\n    \u003cp\u003ePossible symptoms include rough idle, misfire, hard starting, poor acceleration, reduced performance, or increased fuel consumption. These symptoms can also result from other fuel, ignition, or engine problems, so diagnosis is recommended before replacement.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I install the injector myself?\u003c\/summary\u003e\n    \u003cp\u003eInstallation is possible for an experienced technician, but it requires work on the fuel system. Follow the applicable service manual and use professional installation if you are not familiar with fuel-system service.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM injector?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is a 100% new aftermarket replacement. The manufacturer part numbers listed above are reference numbers used to identify the applicable replacement and are not a statement that this product is manufactured by Mercury, Mariner, Nissan, or Tohatsu.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the part number and complete engine fitment before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not work on a hot or pressurized fuel system.\u003c\/li\u003e\n    \u003cli\u003eInspect all seals and connections and check carefully for leaks before operating the engine.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement component, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safe, leak-free operation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We provide replacement components for maintenance and repair of marine engines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClear Fitment Information\u003c\/strong\u003e — Product references and application conditions are presented to help you verify compatibility before ordering.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAftermarket Value\u003c\/strong\u003e — New replacement parts for practical marine service and repair needs.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723806019899,"sku":"25FUI441","price":67.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/25FUI441_f73b8758-5e93-421f-bd0c-50de9cb6f148.jpg?v=1763032238"},{"product_id":"water-pump-repair-kit-fits-mercury-tohatsu-nissan-25-40-hp-replaces-361873220-853792a07","title":"Water Pump Service Repair Kit Without Housing – Fits Selected Mercury Mariner 25–30 HP \u0026 Tohatsu\/Nissan 25–40 HP","description":"\u003csection\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Service Repair Kit Without Housing\u003c\/strong\u003e is an aftermarket service kit for selected Mercury Mariner and Mercury outboard applications, plus selected Tohatsu and Nissan outboards. It is intended for water-pump service where the existing pump housing is retained and remains suitable for reuse.\u003c\/p\u003e\n\u003cp\u003eThe company fitment records identify Mercury Mariner 25 HP and 30 HP engines by serial number, Mercury 25 HP Sea Pro and EFI applications, and selected Japanese-built Tohatsu\/Nissan models including 25C, 30A, and 40C. Always match the complete engine model, horsepower, stroke, and serial-number condition before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket water-pump service kit for selected outboard applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump housing is not included.\u003c\/strong\u003e Inspect the existing housing and related surfaces before installation.\u003c\/li\u003e\n\u003cli\u003eReference numbers include Mercury 46-853792A2, 853792A2, 853792A1, 46-853792T01, 853792A07, and 853792T01, plus Tohatsu references 361-87322-0, 361873220M, 3R0-87322-0, 3R0873220M, and 3NV-87322-0.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these manufacturer reference numbers as identification aids only. Confirm the engine application and compare the original components before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eReference Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e46-853792A2\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e853792A2\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e853792A1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e46-853792T01\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e853792A07\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003e853792T01\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e361-87322-0\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e361873220M\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3R0-87322-0\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3R0873220M\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e3NV-87322-0\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 limited to the applications listed below. Model names, horsepower, stroke, and serial-number conditions must be considered together.\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 \/ Serial Condition\u003c\/th\u003e\n        \u003cth\u003eReference Number\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n        \u003ctd\u003eMariner 25 HP\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003eNot specified in company record\u003c\/td\u003e\n        \u003ctd\u003eS\/N 0N018456 and above\u003c\/td\u003e\n        \u003ctd\u003e46-853792A2; 853792A2; 853792A1; 46-853792T01; 853792A07; 853792T01\u003c\/td\u003e\n        \u003ctd\u003eSelected application; verify the identification plate.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Mariner\u003c\/td\u003e\n        \u003ctd\u003eMariner 30 HP\u003c\/td\u003e\n        \u003ctd\u003e30\u003c\/td\u003e\n        \u003ctd\u003eNot specified in company record\u003c\/td\u003e\n        \u003ctd\u003eS\/N 0N001875 and above\u003c\/td\u003e\n        \u003ctd\u003e46-853792A2; 853792A2; 853792A1; 46-853792T01; 853792A07; 853792T01\u003c\/td\u003e\n        \u003ctd\u003eSelected application; verify the identification plate.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Outboard\u003c\/td\u003e\n        \u003ctd\u003eSea Pro\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003eNot specified in company record\u003c\/td\u003e\n        \u003ctd\u003eS\/N 0R051710 and up\u003c\/td\u003e\n        \u003ctd\u003e853792A07\u003c\/td\u003e\n        \u003ctd\u003eConfirm the full model and serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Outboard\u003c\/td\u003e\n        \u003ctd\u003eEFI JET\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003eNot specified in company record\u003c\/td\u003e\n        \u003ctd\u003eS\/N 0R165086 and up\u003c\/td\u003e\n        \u003ctd\u003e853792A07\u003c\/td\u003e\n        \u003ctd\u003eConfirm the full model and serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Outboard\u003c\/td\u003e\n        \u003ctd\u003eEFI Standard\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003eNot specified in company record\u003c\/td\u003e\n        \u003ctd\u003eS\/N 0R106999 and up\u003c\/td\u003e\n        \u003ctd\u003e853792A07\u003c\/td\u003e\n        \u003ctd\u003eConfirm the full model and serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Outboard\u003c\/td\u003e\n        \u003ctd\u003eEFI Standard\u003c\/td\u003e\n        \u003ctd\u003e30\u003c\/td\u003e\n        \u003ctd\u003eNot specified in company record\u003c\/td\u003e\n        \u003ctd\u003eS\/N 0R106999 and up\u003c\/td\u003e\n        \u003ctd\u003e853792A07\u003c\/td\u003e\n        \u003ctd\u003eConfirm the full model and serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n        \u003ctd\u003e25C\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke application listed by company\u003c\/td\u003e\n        \u003ctd\u003eSelected Japanese-built models\u003c\/td\u003e\n        \u003ctd\u003e361-87322-0; 361873220M\u003c\/td\u003e\n        \u003ctd\u003eCompany record also lists the 25C model designation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n        \u003ctd\u003e30A\u003c\/td\u003e\n        \u003ctd\u003e30\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke application listed by company\u003c\/td\u003e\n        \u003ctd\u003eSelected Japanese-built models\u003c\/td\u003e\n        \u003ctd\u003e361-87322-0; 361873220M\u003c\/td\u003e\n        \u003ctd\u003eCompany record also lists the 30A model designation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n        \u003ctd\u003e40C\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003eConfirm against the engine identification plate\u003c\/td\u003e\n        \u003ctd\u003eSelected models\u003c\/td\u003e\n        \u003ctd\u003e361-87322-0; 361873220M\u003c\/td\u003e\n        \u003ctd\u003eVerify the exact model and stroke before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eTohatsu\u003c\/td\u003e\n        \u003ctd\u003e25–30 HP Japanese-built models\u003c\/td\u003e\n        \u003ctd\u003e25–30\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke, 2-cylinder\u003c\/td\u003e\n        \u003ctd\u003eInternational models, 2001–2017\u003c\/td\u003e\n        \u003ctd\u003e361-87322-0; 361873220M\u003c\/td\u003e\n        \u003ctd\u003eFitment is limited to the specified Japanese-built applications.\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 service repair kit\u003c\/dd\u003e\n  \u003cdt\u003eHousing\u003c\/dt\u003e\n  \u003cdd\u003eNot included; reuse of the existing housing is required if it is serviceable\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Mercury Mariner, Mercury, Tohatsu, and Nissan outboard engines\u003c\/dd\u003e\n  \u003cdt\u003eReference Numbers\u003c\/dt\u003e\n  \u003cdd\u003eMercury 46-853792A2, 853792A2, 853792A1, 46-853792T01, 853792A07, 853792T01; Tohatsu\/Nissan 361-87322-0 and 361873220M\u003c\/dd\u003e\n  \u003cdt\u003ePart Type\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat Is Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWater pump service repair kit for the listed applications.\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eWater pump housing is not included.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIndividual kit components and quantities are not specified in the company record. Compare the kit with the original assembly before installation and do not assume that a housing or other unlisted component is included.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the complete engine model, horsepower, stroke, and serial number before beginning work.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery where applicable and follow the engine manufacturer’s safety procedure.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the service manual for your exact engine.\u003c\/li\u003e\n  \u003cli\u003eRemove the existing water-pump service components and retain the housing only if it is suitable for reuse.\u003c\/li\u003e\n  \u003cli\u003eClean the mating surfaces and inspect the housing, wear surfaces, driveshaft, keyway, and related components for scoring, distortion, or damage.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement service components according to the engine manufacturer’s procedure. Do not force the impeller or reuse damaged fasteners or sealing surfaces.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water pump and lower unit using the manufacturer’s torque specifications and alignment procedure.\u003c\/li\u003e\n  \u003cli\u003eTest the engine in an approved water source and confirm a steady cooling-water tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my engine?\u003c\/summary\u003e\u003cp\u003eMatch your engine brand, exact model designation, horsepower, stroke, and serial number to the compatibility table. Also compare the reference number from your original component. A general horsepower match alone is not sufficient.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit include the water-pump housing?\u003c\/summary\u003e\u003cp\u003eNo. The company product records specify a water-pump service kit without the housing for the Mercury applications. Plan to reuse your existing housing only after checking it for wear or damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include overheating, a weak or missing tell-tale stream, or an engine warning alarm. During inspection, a cracked, brittle, distorted, or damaged impeller or a scored housing may indicate that water-pump service is needed.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM or aftermarket part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement service kit. The listed manufacturer numbers are reference numbers used to help identify the intended application; this product is not represented as an original OEM component.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould I replace the housing with the service kit?\u003c\/summary\u003e\u003cp\u003eThe housing is not included. Inspect the existing housing and replace it separately if it is worn, scored, distorted, or otherwise unsuitable for reuse.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should a water-pump service be performed?\u003c\/summary\u003e\u003cp\u003eService intervals depend on the engine manufacturer’s maintenance schedule and operating conditions. Inspect the cooling system regularly, especially after operation in sandy, silty, or saltwater environments, and service it when inspection or symptoms indicate wear.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the exact model, horsepower, stroke, and serial-number range before purchase.\u003c\/li\u003e\n  \u003cli\u003eCompare the original component and reference number with the information above.\u003c\/li\u003e\n  \u003cli\u003eThe water-pump housing is not included.\u003c\/li\u003e\n  \u003cli\u003eUse the service manual for your exact engine and follow all torque, sealing, alignment, and testing procedures.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when lower-unit removal or water-pump 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-Focused Parts\u003c\/strong\u003e — We supply replacement components for a range of outboard maintenance applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Based Listings\u003c\/strong\u003e — Product information is organized around model, horsepower, stroke, serial-number, and reference-number details.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket Value\u003c\/strong\u003e — Replacement parts are offered as practical alternatives for routine marine service and repair.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723806052667,"sku":"22KT025","price":42.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Repair_Kit_for_Mercury_-_Tohatsu_Nissan_25-40_HP_361873220_-_JLM_MARINE-8288304.jpg?v=1763032239"},{"product_id":"carburetor-rebuild-kit-fits-yamaha-60hp-70hp-2-stroke-replaces-6h3-w0093-01-00-6h3-w0093-02-00-6h3-w0093-03-00","title":"Carburetor Repair Seal Kit for Yamaha P60 (1991), C60 and E60 Outboards – Replaces 6H3-W0093-01-00, 6H3-W0093-02 and 6H3-W0093-00","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 aftermarket \u003cstrong\u003eCarburetor Repair Seal Kit\u003c\/strong\u003e is intended for specified Yamaha outboard applications. It is listed for the Yamaha P60 (1991), C60 and E60 models, plus Yamaha 70-horsepower models from 1990–1991. The kit is designed to renew the carburetor sealing components identified for these applications during carburetor service.\u003c\/p\u003e\n  \u003cp\u003eUse the part-number references and fitment information below to compare the kit with the original component required for your engine. Model, year and engine identification should be confirmed before installation.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eCarburetor repair seal kit for Yamaha outboards.\u003c\/li\u003e\n    \u003cli\u003eAftermarket replacement for the listed Yamaha applications.\u003c\/li\u003e\n    \u003cli\u003eDesigned for service work involving carburetor seals and related sealing components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n  \u003cp\u003eThe following numbers are listed as applicable references for this product. A cross-reference does not replace verification of the complete engine model and year.\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 Type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-01-00\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-02\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-00\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eSierra Marine\u003c\/td\u003e\n\u003ctd\u003e18-7766\u003c\/td\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMallory Marine\u003c\/td\u003e\n\u003ctd\u003e9-37502\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\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n  \u003cp\u003eCompany fitment information identifies the following Yamaha outboard applications. Keep each model, horsepower and year condition together when checking compatibility.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Yamaha Engine Compatibility\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eP60\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e1991\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-01-00 \/ 6H3-W0093-02 \/ 6H3-W0093-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC60\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-01-00 \/ 6H3-W0093-02 \/ 6H3-W0093-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eE60\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-01-00 \/ 6H3-W0093-02 \/ 6H3-W0093-00\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e1990–1991\u003c\/td\u003e\n\u003ctd\u003e6H3-W0093-01-00 \/ 6H3-W0093-02 \/ 6H3-W0093-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp\u003eFitment outside the applications listed above has not been established for this product. Verify the exact model designation and year from the engine identification label or service documentation before ordering.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCarburetor Repair Seal Kit\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eYamaha outboard carburetor service\u003c\/dd\u003e\n    \u003cdt\u003eReplacement Type\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement\u003c\/dd\u003e\n    \u003cdt\u003eSpecified Applications\u003c\/dt\u003e\n\u003cdd\u003eYamaha P60 (1991), C60, E60 and 70-horsepower models from 1990–1991\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePackage Information\u003c\/h2\u003e\n  \u003cp\u003eThis listing is for the carburetor repair seal kit identified by the references and applications on this page. The company product record does not provide an itemized component list or individual package quantities, so specific seals, gaskets, needles, floats and other components should not be assumed to be included unless shown in the product images or confirmed before purchase.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003cp\u003eProfessional installation or qualified marine-service assistance is recommended. Before disassembly, shut off the fuel supply, disconnect the battery where appropriate and allow the engine to cool.\u003c\/p\u003e\n  \u003col\u003e\n    \u003cli\u003eConfirm the engine model and year and compare the existing carburetor components with the listed references.\u003c\/li\u003e\n    \u003cli\u003eRemove the carburetor according to the engine service manual, documenting hose and linkage positions.\u003c\/li\u003e\n    \u003cli\u003eDisassemble the carburetor on a clean work surface and retain serviceable parts that are not included in the repair seal kit.\u003c\/li\u003e\n    \u003cli\u003eClean suitable metal components with an appropriate carburetor cleaner; protect rubber and plastic parts from incompatible solvents.\u003c\/li\u003e\n    \u003cli\u003eInstall the replacement sealing components as directed by the service manual and inspect mating surfaces for damage.\u003c\/li\u003e\n    \u003cli\u003eReassemble and reinstall the carburetor, reconnecting all hoses and linkages correctly.\u003c\/li\u003e\n    \u003cli\u003ePrime the fuel system and check carefully for leaks before starting the engine.\u003c\/li\u003e\n    \u003cli\u003eSet adjustments and perform any required synchronization in accordance with the engine manufacturer's service procedure.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow do I confirm that this seal kit fits my engine?\u003c\/summary\u003e\u003cp\u003eConfirm that your engine is a Yamaha P60 from 1991, a Yamaha C60, a Yamaha E60, or a Yamaha 70-horsepower model from 1990–1991. Also compare the original part reference and carburetor configuration before ordering.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eDoes this product fit every Yamaha 60HP or 70HP outboard?\u003c\/summary\u003e\u003cp\u003eNo. The listed fitment is limited to the Yamaha applications identified on this page. Horsepower alone is not sufficient to establish compatibility because model and year conditions can vary.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eIs this an OEM Yamaha part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket repair seal kit. Yamaha part numbers are shown only as OEM reference numbers for comparison.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eAre all components shown in the original description included?\u003c\/summary\u003e\u003cp\u003eNo itemized contents or quantities are confirmed by the company product record. Do not rely on an assumed list of needles, floats, caps or other parts; confirm the package contents before installation if those components are required.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat should I do if my model or year is not listed?\u003c\/summary\u003e\u003cp\u003eDo not assume compatibility. Compare the original carburetor and part reference with the information above or obtain confirmation from a qualified marine-parts specialist before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFuel-system work should be performed in a well-ventilated area away from flames, sparks and ignition sources.\u003c\/li\u003e\n    \u003cli\u003eFollow the engine manufacturer's service instructions for carburetor removal, adjustment and testing.\u003c\/li\u003e\n    \u003cli\u003eInspect the completed installation for fuel leaks before operating the engine.\u003c\/li\u003e\n    \u003cli\u003eThis product is an aftermarket replacement and is not manufactured by Yamaha.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We provide replacement components for a range of marine repair and maintenance applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product pages identify available model and part-number references to support fitment checks.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eService-Friendly Information\u003c\/strong\u003e — Always compare the original component and consult the appropriate service documentation before installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723806183739,"sku":"19CR007","price":25.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/19CR007-1.jpg?v=1763032244"}],"url":"https:\/\/seasierra.com\/collections\/tohatsu-4-stroke-25-30hp-outboard-marine-engine.oembed","provider":"SeaSierra","version":"1.0","type":"link"}