{"title":"Yamaha 50-70HP 4-Stroke Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eThis page is for Yamaha 50–70HP 4‑Stroke outboard engines and is designed to help you find compatible parts and service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Yamaha outboard collection. Scroll to the bottom of this page to start browsing parts for this engine, and on the collection page use the “Filter \u0026amp; Sort” controls to narrow by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block;padding:10px 14px;border:1px solid #1e63ff;border-radius:6px;text-decoration:none;\"\u003eBrowse All Yamaha Outboard Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\"\u003e\n  \u003ch2\u003eHow to Identify Your 50–70HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the nameplate\/serial tag on the transom bracket or the swivel bracket. It lists model code, shaft length, and serial number.\u003c\/li\u003e\n    \u003cli\u003eModel code basics: “F” indicates four‑stroke (e.g., F50, F60, F70). “T” indicates High Thrust variants (T50, T60). Suffix letters often denote shaft length (S=15\", L=20\", X=25\") and control type (H=tiller, R=remote).\u003c\/li\u003e\n    \u003cli\u003eYear\/production codes appear as trailing letters in the model string. Suffix updates can affect parts like cowlings, ignition, or fuel system components.\u003c\/li\u003e\n    \u003cli\u003ePlatform tips: F50\/F60\/F70 are inline‑4 four‑strokes. High Thrust models use different gear ratios\/props for better push on heavy boats; some props and gearcase parts differ.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\"\u003e\n  \u003ch2\u003eEngine Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eMidrange Inline‑4 (F50\/F60\/F70)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:860px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑4 four‑stroke, EFI on most later models; designed for efficient midrange torque and low vibration.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eF50, F60, F70 with suffixes such as F50TLR, F60LB, F70LA (letters indicate trim\/tilt, shaft, control, and production year).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eGood fuel economy, smooth operation, broad parts availability for routine service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eMany service parts cross‑fit within the family; verify by exact model code for filters, gaskets, and ignition\/FI components.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eHigh Thrust Variant (T50\/T60)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:860px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑4 four‑stroke tuned for thrust, with larger‑diameter propellers and revised gear ratios.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eT50, T60 (e.g., T60TLR). Often paired with pontoons, sailboats, or heavy rigs needing strong low‑speed push.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eSuperior low‑speed control and pushing power; ideal for displacement hulls or heavily loaded boats.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eMany engine components interchange with F50\/F60, but props, some gearcase parts, and mounting hardware can be different—confirm by model code.\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\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for Yamaha 50–70HP four‑stroke outboards. Always follow the procedures and schedules in your official service manual.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eWarm engine before draining; replace washer if specified; reset maintenance reminder if equipped.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-service-maintenance-kits\"\u003eYamaha Service \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eInspect for metal or milky oil (water intrusion). Replace seals if contamination is found.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003eInspect 100 hours; replace 200 hours or as needed\u003c\/td\u003e\n        \u003ctd\u003eCheck gap and fouling; replace sooner if misfire, hard starts, or rough idle.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eDrain or replace if water\/debris present; carry a spare onboard.\u003c\/td\u003e\n        \u003ctd\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\u003eWater pump impeller\/kit\u003c\/td\u003e\n        \u003ctd\u003eInspect annually; replace 2–3 seasons or 200 hours\u003c\/td\u003e\n        \u003ctd\u003eShorten interval for sandy\/silty waters or weak telltale stream.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-water-pump-repair-kits\"\u003eYamaha Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAnodes (internal\/external)\u003c\/td\u003e\n        \u003ctd\u003eInspect 100 hours; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd\u003eMatch alloy to water type (fresh, brackish, salt). Keep paint off anodes.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\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\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service: \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-service-maintenance-kits\"\u003eYamaha Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-water-pump-repair-kits\"\u003eYamaha Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-starters\"\u003eYamaha Starters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion: \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-propellers\"\u003eYamaha Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Sealing: \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeak telltale stream \/ overheat alarm\u003c\/td\u003e\n        \u003ctd\u003eInspect intake screens for debris; verify telltale hose is clear; evaluate impeller age\/condition and thermostat.\u003c\/td\u003e\n        \u003ctd\u003eWater pump repair kit, thermostat, intake screen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck prop damage or excessive pitch; replace\/inspect fuel filter; verify clean plugs and fresh fuel.\u003c\/td\u003e\n        \u003ctd\u003ePropeller, fuel filter, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd\u003eConfirm battery health and connections; inspect\/replace plugs; check for restricted fuel supply or contaminated fuel.\u003c\/td\u003e\n        \u003ctd\u003eSpark plugs, fuel filter, injectors (clean\/service)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise or milky gear oil\u003c\/td\u003e\n        \u003ctd\u003eDrain and inspect gear oil; check for water intrusion at prop shaft\/shift shaft; verify seals.\u003c\/td\u003e\n        \u003ctd\u003eGear lube, lower unit seal kit, prop shaft seals\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eBattery not charging\u003c\/td\u003e\n        \u003ctd\u003eTest battery, wiring, and output at idle\/fast idle; inspect rectifier\/regulator connections.\u003c\/td\u003e\n        \u003ctd\u003eRectifier\/regulator, wiring connectors\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between F50\/F60\/F70 and High Thrust models?\u003c\/summary\u003e\n    \u003cp\u003eMany service parts (plugs, oil filters, some gaskets) interchange within the family, but High Thrust (T50\/T60) models use different gear ratios and propellers. Always verify by the exact model code and suffix before ordering.\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\u003eInspect annually and replace every 2–3 seasons or ~200 hours. In sandy or silty water, or if you see a weak telltale stream or overheat warnings, replace sooner.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change lower unit gear oil?\u003c\/summary\u003e\n    \u003cp\u003eEvery 100 hours or once per season. If the drained oil looks milky or metallic, replace seals and re‑test after a short run.\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 the full model code and serial number from the bracket nameplate, plus shaft length and control type (tiller or remote). A clear photo of the nameplate helps ensure the correct parts.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:12px 0;\"\u003e\n  \u003cp\u003eReady to find parts by horsepower, year, and model? Browse the Yamaha outboard catalog and filter to your exact engine.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block;padding:10px 14px;border:1px solid #1e63ff;border-radius:6px;text-decoration:none;\"\u003eShop Yamaha Outboard Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n  \u003cp style=\"font-size:0.95em;color:#444;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"water-pump-repair-kit-fits-yamaha-50-70-hp-outboards-replaces-6h3-w0078-02-00-18-3465","title":"Water Pump Impeller Kit for Yamaha 60F, 70B, FT50B, FT50C, FT50G, FT50J, FT60B, FT60D \u0026 FT60G","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Kit\u003c\/strong\u003e is an aftermarket cooling-system service kit for selected Yamaha outboard engines. It is intended for routine water-pump maintenance in the lower unit and helps restore dependable water circulation through the engine cooling system.\u003c\/p\u003e\n\u003cp\u003eThe kit is associated with Yamaha water-pump reference \u003cstrong\u003e6H3-W0078-A0\u003c\/strong\u003e and is also cross-referenced in aftermarket catalogs with Yamaha reference \u003cstrong\u003e6H3-W0078-02-00\u003c\/strong\u003e and Sierra reference \u003cstrong\u003e18-3465\u003c\/strong\u003e. Always confirm the complete engine model and year before ordering; horsepower alone is not sufficient for fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWater-pump service components for selected Yamaha outboards.\u003c\/li\u003e\n  \u003cli\u003eInstalls in the lower-unit gearcase water-pump assembly.\u003c\/li\u003e\n  \u003cli\u003eSupports replacement of the impeller and related wear, sealing, and fastening components supplied in the kit.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement; not a Yamaha or Sierra-branded component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these manufacturer and aftermarket references when comparing the part to your existing water-pump service components.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or Reference\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eRole\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-W0078-A0\u003c\/td\u003e\n\u003ctd\u003ePrimary reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6H3-W0078-02-00\u003c\/td\u003e\n\u003ctd\u003eCross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3465\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eFitment is based on the listed Yamaha model designations. Verify the full model code, year, shaft configuration, and serial-number range against your engine 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\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eFitment Note\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e60F\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e70B\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT50B\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT50C\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT50G\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT50J\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT60B\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT60D\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT60G\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eConfirm complete model designation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eWater Pump Impeller Kit\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eOutboard cooling-system service\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n  \u003cdd\u003eLower unit \/ gearcase water-pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eConstruction\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement components\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Reference\u003c\/dt\u003e\n  \u003cdd\u003e6H3-W0078-A0\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cp\u003eThe kit is supplied with the following service components. Quantities and component identification should be checked against the parts removed from your engine before assembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Cartridge Insert (663-44322-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller (6H3-44352-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Pump Gasket 1 (6H3-44315-A0-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge Outer Plate (6H3-44323-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge Gasket (6H3-44324-A0-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Pump Gasket 2 (688-44316-A0-00)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (93210-46044-00)\u003c\/li\u003e\n  \u003cli\u003e2 x Bolts with Washers (90119-08M14-00)\u003c\/li\u003e\n  \u003cli\u003e2 x Bolts with Washers (90119-08M33-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Woodruff Key (90280-03M03-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003ePlace the outboard in a safe service position, disconnect the battery where applicable, and shift the gearcase into neutral.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the service procedure for your exact Yamaha model.\u003c\/li\u003e\n  \u003cli\u003eRemove the water-pump cover and inspect the housing, driveshaft, water tube, and mating surfaces for damage or excessive wear.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, gaskets, cartridge components, key, and fasteners. Clean all sealing surfaces without scratching them.\u003c\/li\u003e\n  \u003cli\u003eInstall the supplied key on the driveshaft and position the new impeller over the key.\u003c\/li\u003e\n  \u003cli\u003eInstall the supplied gaskets, cartridge insert, outer plate, O-ring, and related components in the correct order for your water-pump assembly.\u003c\/li\u003e\n  \u003cli\u003eRotate the driveshaft in the specified direction while fitting the pump cover so the impeller blades seat correctly.\u003c\/li\u003e\n  \u003cli\u003eInstall and tighten the supplied fasteners using the torque specification in the service manual for your engine.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, making sure the driveshaft, shift mechanism, and water tube are correctly aligned.\u003c\/li\u003e\n  \u003cli\u003eRun the engine only with an appropriate flushing device or in suitable water and verify a steady cooling-water tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm that this kit fits my Yamaha outboard?\u003c\/summary\u003e\n  \u003cp\u003eCompare the complete model designation on your engine with the compatibility table and verify the existing water-pump reference. Do not rely on horsepower alone because Yamaha engines with similar horsepower can use different water-pump components.\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\u003eSymptoms can include a weak or intermittent tell-tale stream, overheating at idle or low speed, reduced cooling-water circulation, or visible cracking, hardening, deformation, or missing blades when the impeller is inspected.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShould the impeller and gaskets be replaced together?\u003c\/summary\u003e\n  \u003cp\u003eReplacing the related gaskets, O-ring, key, and wear components during the same service helps reduce the risk of leakage and premature water-pump wear. Inspect the pump housing and plate separately and replace them if damaged.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this kit include a complete water-pump housing?\u003c\/summary\u003e\n  \u003cp\u003eNo complete housing is listed as part of this impeller kit. Confirm the supplied component list and compare your existing housing and pump body before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I install this kit myself?\u003c\/summary\u003e\n  \u003cp\u003eInstallation requires removal of the lower unit and correct assembly of the water pump. It is suitable for an experienced DIY mechanic with the proper tools and service information. If you are unfamiliar with lower-unit service, use a qualified marine technician.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM Yamaha part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement kit intended for the listed applications. Yamaha and Sierra numbers are provided only as reference and cross-reference information.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm the complete engine model, year, shaft configuration, and serial-number information before ordering.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump housing, wear plate, driveshaft, water tube, and sealing surfaces before reassembly.\u003c\/li\u003e\n  \u003cli\u003eUse the service manual for your exact engine for torque values, assembly order, and lower-unit procedures.\u003c\/li\u003e\n  \u003cli\u003eNever operate an outboard without an adequate water supply.\u003c\/li\u003e\n  \u003cli\u003eStop immediately if the tell-tale stream is weak, intermittent, or absent, or if the engine shows signs of overheating.\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 outboard service and maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product information is organized around part references and engine-model fitment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService-Ready Support\u003c\/strong\u003e — Verify your engine details and supplied components before beginning installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723979002171,"sku":"23KY084","price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23KY0841_d42a661c-0aee-4ed3-b481-67dd0107759e.jpg?v=1763039149"}],"url":"https:\/\/seasierra.com\/collections\/yamaha-50-70hp-4-stroke-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}