{"title":"Yamaha 4-Stroke Outboard Engine Parts 225-300HP","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is for Yamaha 4‑Stroke 225–300 HP outboard engines. Use it to find compatible parts and quick service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Yamaha collection for a wider selection. 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 results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#0e7490; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Yamaha Parts\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\"\u003e\n  \u003ch2\u003eHow to Identify Your 225–300HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate location: Look on the port-side transom bracket or swivel bracket for the model\/serial plate (and a secondary sticker on the clamp bracket on some models).\u003c\/li\u003e\n    \u003cli\u003eReading the model code: For Yamaha four‑strokes, a code such as F300XA or F300XCB indicates 4‑stroke (F), horsepower (300), shaft length (X = 25\", U = 30\"), with suffixes for control type and generation. “L” at the start (e.g., LF300XCB2) denotes counter‑rotation.\u003c\/li\u003e\n    \u003cli\u003eControl type cues: XA\/XL often indicate mechanical controls, while XCA\/XCB families are digital electronic control (DEC) models. Match your control type when selecting rigging and related parts.\u003c\/li\u003e\n    \u003cli\u003eYear\/series hints: Suffix characters and digits can indicate revision year or series update. When in doubt, verify using the full model code and serial number.\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\u003eYamaha V6 Four‑Stroke EFI (225–300HP)\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;\"\u003eV6, four‑stroke, EFI outboard; 20\"\/25\"\/30\" shaft options; standard and counter‑rotation.\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;\"\u003eExamples include F225\/F250 family models and 300HP variants such as F300XA, F300XCB, F300UCB, F300NSB, and counter‑rotating LF300XCB2.\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;\"\u003eStrong mid‑range torque, smooth operation, good fuel economy for the class, broad parts availability.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMatch parts by full model code, shaft length, and control type (mechanical vs DEC). Counter‑rotation (LF) gearcases use different propeller rotation. Some rigging and electrical items differ between XA and XCA\/XCB families.\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 four‑stroke V6 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;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWarm engine before draining; replace crush washer; verify level after run‑up.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 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 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCheck for water intrusion or metal on drain plug magnets; replace gaskets.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha 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 plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect 100 hours; replace 300 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eGap to spec; inspect for fouling or uneven color across banks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 #f3f4f6;\"\u003eFuel filter(s)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace primary water‑separating element and inline filters; drain any bowls for water.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters\"\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;\"\u003e2–3 seasons (sooner in sandy\/silty water)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace impeller and key; inspect wear plate, cup, and housing for grooves.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAnodes (internal \u0026amp; external)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect every 50 hours; replace at ~50% wear\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eUse the correct alloy (salt\/brackish\/fresh); verify ground continuity.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eThermostats\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect 200 hours; replace as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eStuck thermostats can cause overheat or cold‑running issues; check both banks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\"\u003eYamaha Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller \u0026amp; hardware\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect each service\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck for dings and correct pitch; verify thrust washer, spacer, and nut condition.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-propellers\"\u003eYamaha Propellers\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\"\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\u003eGearcase \u0026amp; Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha Lower Unit Seal Kits\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  \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%; 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 \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect intake screens, tell‑tale hose, and impeller condition; verify thermostats move freely.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWater pump kit, intake screen, thermostats, anodes (internal)\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;\"\u003eCheck fuel quality, water‑separating filter, spark plugs, and prop pitch\/damage.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFuel filters, spark plugs, propeller, anodes (to reduce drag from corrosion growth)\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;\"\u003eVerify battery state, connections, and primer bulb; inspect plugs and air leaks on fuel lines.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eSpark plugs, starter\/battery cables, fuel lines, filters\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eGearcase noise \/ metal on drain plug\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eChange gear oil and inspect; check prop shaft for fishing line; verify seals for leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eLower unit seal kit, prop shaft seals, thrust washer, gear oil drain gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHigh charging voltage \/ alarms (DEC models)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck battery type and health; confirm clean grounds; verify rigging matches DEC requirements.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eBatteries, cables, fuses, rectifier\/regulator, DEC harness components\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 different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome service items interchange across V6 225–300HP models, but many items differ by control type (mechanical vs DEC), shaft length, and rotation. Always confirm using your full model code and serial number.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect each season and replace every 2–3 seasons under normal use. In sandy or silty water, or if the stream is weak or uneven, replace sooner using a complete water pump kit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eReplace lower unit gear oil at least every 100 hours or annually. If the oil appears milky or you find excessive metal on the magnetic plug, service the seals and recheck.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the full model code (e.g., F300XA, F300XCB, LF300XCB2), serial number, shaft length, rotation (standard or counter), and control type (mechanical or DEC). Photos of the nameplate and the part location also help.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts for your Yamaha four‑stroke 225–300HP? Browse the main Yamaha collection by horsepower, year, and model.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#0e7490; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Yamaha Outboard Parts\u003c\/a\u003e\u003c\/p\u003e\n  \u003cp style=\"font-size:0.95em; color:#374151;\"\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":"thermostat-fits-yamaha-f225-f250-f300-4-2l-v6-replaces-6ce-12411-00-00","title":"Thermostat for Yamaha F225F, F250D \u0026 F300B Four-Stroke Outboards – 52°C","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;\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 aftermarket \u003cstrong\u003ethermostat\u003c\/strong\u003e is specified for Yamaha F225F, F250D, and F300B four-stroke outboard engines. It is designed to regulate engine temperature at the listed 52°C operating specification and provides a replacement option for the applicable original thermostat.\u003c\/p\u003e\n\u003cp\u003eThe listed manufacturer references are Yamaha \u003cstrong\u003e6CE-12411-00\u003c\/strong\u003e and \u003cstrong\u003e6CE-12411-10-00\u003c\/strong\u003e. The aftermarket reference associated with this thermostat is \u003cstrong\u003e18-3524\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e52°C temperature specification.\u003c\/li\u003e\n\u003cli\u003eReplacement thermostat for the engine cooling system.\u003c\/li\u003e\n\u003cli\u003eFor Yamaha F225F, F250D, and F300B four-stroke outboards.\u003c\/li\u003e\n\u003cli\u003eVerify the complete engine model and existing thermostat reference before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to compare your original component with this replacement thermostat.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand or Source\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CE-12411-00\u003c\/td\u003e\n        \u003ctd\u003eManufacturer reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CE-12411-10-00\u003c\/td\u003e\n        \u003ctd\u003eManufacturer reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAftermarket\u003c\/td\u003e\n        \u003ctd\u003e18-3524\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\u003eThis listing is based on the company fitment record for the following Yamaha four-stroke outboard models. Model, year, shaft length, and serial-number coverage are not specified in that record, so confirm those details against your engine documentation 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\u003eYear or Serial Range\u003c\/th\u003e\n        \u003cth\u003eManufacturer References\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\u003eF225F\u003c\/td\u003e\n        \u003ctd\u003e225\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e6CE-12411-00; 6CE-12411-10-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF250D\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e6CE-12411-00; 6CE-12411-10-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF300B\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e6CE-12411-00; 6CE-12411-10-00\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\u003eThermostat\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha four-stroke outboard cooling system\u003c\/dd\u003e\n  \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n  \u003cdd\u003e52°C\u003c\/dd\u003e\n  \u003cdt\u003eApplicable Models\u003c\/dt\u003e\n  \u003cdd\u003eYamaha F225F, F250D, and F300B\u003c\/dd\u003e\n  \u003cdt\u003eManufacturer References\u003c\/dt\u003e\n  \u003cdd\u003e6CE-12411-00 and 6CE-12411-10-00\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003e18-3524\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 Thermostat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis listing is for the thermostat only. A housing gasket or other installation hardware is not specified as included; reuse or replacement of those items should be determined during service.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the engine model and the reference on the thermostat being replaced before beginning work.\u003c\/li\u003e\n  \u003cli\u003eAllow the engine to cool completely and follow the safety procedures in the applicable Yamaha service manual.\u003c\/li\u003e\n  \u003cli\u003eRemove the thermostat housing carefully and note the orientation of the original thermostat.\u003c\/li\u003e\n  \u003cli\u003eRemove the old thermostat and clean the housing and mating surfaces without damaging them.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement thermostat in the same orientation as the original component.\u003c\/li\u003e\n  \u003cli\u003eInspect the housing seal or gasket and replace it if required for a proper seal.\u003c\/li\u003e\n  \u003cli\u003eReinstall the housing and tighten the fasteners to the manufacturer’s specified torque.\u003c\/li\u003e\n  \u003cli\u003eRun the engine according to the service procedure and check for leaks or abnormal temperature behavior.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat does this thermostat do?\u003c\/summary\u003e\u003cp\u003eThe thermostat controls coolant flow through the engine cooling system so the engine can operate near its specified temperature.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich Yamaha engines are listed for this thermostat?\u003c\/summary\u003e\u003cp\u003eThe company fitment record lists Yamaha F225F, F250D, and F300B four-stroke outboards. Confirm the complete model designation and the reference on your existing thermostat before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat temperature is this thermostat specified for?\u003c\/summary\u003e\u003cp\u003eThe listed operating-temperature specification is 52°C.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich manufacturer references should I compare?\u003c\/summary\u003e\u003cp\u003eCompare your original thermostat with Yamaha references 6CE-12411-00 and 6CE-12411-10-00. The associated aftermarket reference is 18-3524.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs a gasket included?\u003c\/summary\u003e\u003cp\u003eNo gasket is specified as included. This listing is for one thermostat, so inspect the existing seal and replace it if required by the service procedure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I install this thermostat myself?\u003c\/summary\u003e\u003cp\u003eInstallation should be performed only by someone familiar with outboard cooling-system service. Always follow the service manual for the exact engine model, fastener torque, sealing procedure, and post-installation checks.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement thermostat. Yamaha references are provided for identification and fitment comparison only.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow should I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCheck the full engine model, year or serial information, the original thermostat reference, and the physical replacement before installation. Do not rely on horsepower alone to determine fitment.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAllow the engine to cool completely before servicing the thermostat.\u003c\/li\u003e\n  \u003cli\u003eVerify the full engine model and manufacturer reference before ordering.\u003c\/li\u003e\n  \u003cli\u003eModel, year, shaft, and serial-number coverage is not specified beyond the listed model fitment; confirm those details using your engine documentation.\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 applicable service procedure or torque specifications are not available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We supply replacement components for marine service and repair applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Information\u003c\/strong\u003e — Product references and model details are provided to help you compare the replacement with your original part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService-Ready Support\u003c\/strong\u003e — Always use the applicable engine service documentation for installation and maintenance procedures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723799171387,"sku":"21TH013","price":34.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TH013_1_36a1e05d-a3da-4068-8c8a-9e55be748358.jpg?v=1763032102"},{"product_id":"water-pump-impeller-kit-fits-yamaha-f225-f250-f300-4-2l-outboards-replaces-6ce-w0078-01-00","title":"Water Pump Repair Kit Without Housing – For Yamaha F225, F250 and F300 V6 4-Stroke Outboards","description":"\u003csection\u003e\n\u003cstyle\u003e\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\ntable.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n@media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit Without Housing\u003c\/strong\u003e is designed to service the lower-unit water pump on selected Yamaha F225, F250 and F300 V6 four-stroke outboards. It is supplied as a repair kit for the pump internals and does not include the water-pump housing.\u003c\/p\u003e\n\u003cp\u003eThe kit corresponds to Yamaha water-pump repair-kit references \u003cstrong\u003e6CE-W0078-00-00\u003c\/strong\u003e, \u003cstrong\u003e6CE-W0078-01-00\u003c\/strong\u003e and \u003cstrong\u003e6CE-W0078-02-00\u003c\/strong\u003e in the catalog records reviewed. These references cover different model years and should not be treated as interchangeable for every engine without confirming the exact model and year.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRepair-kit configuration without a water-pump housing.\u003c\/li\u003e\n\u003cli\u003eIncludes the impeller, key, seals, o-rings and related pump-service components listed below.\u003c\/li\u003e\n\u003cli\u003eSuitable for servicing the lower-unit water-pump assembly when the existing housing is reusable.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement; not a genuine Yamaha-branded component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese are manufacturer and aftermarket reference numbers associated with this repair-kit application. Confirm the complete engine model and production year before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference Type\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-00-00\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eUsed in earlier catalog applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-01-00\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eUsed in selected 2014-era applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-02-00\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eUsed in selected later applications, including catalog records from 2021.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3470\u003c\/td\u003e\n\u003ctd\u003eAftermarket catalog reference\u003c\/td\u003e\n\u003ctd\u003eWater pump repair kit without housing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3471\u003c\/td\u003e\n\u003ctd\u003eAftermarket catalog reference\u003c\/td\u003e\n\u003ctd\u003eDifferent configuration identified as a kit with housing; not the same package configuration as this listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eFitment depends on the exact Yamaha model, year and component configuration. The catalog data reviewed identifies this repair-kit family for selected F225, F250 and F300 V6 four-stroke applications, including the examples below.\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 examples\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eDocumented application examples\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\u003eF225XCA, LF225XCA\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2011–2012 catalog records; selected 2014 and 2021 records also appear for related F225 variants.\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-00-00 \/ -01-00 \/ -02-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF250UCA, F250XCA, LF250UCA, LF250XCA\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2011–2012 catalog records; selected 2014 and later records appear for related F250 variants.\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-00-00 \/ -01-00 \/ -02-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF300UCA, F300XCA, LF300UCA, LF300XCA\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2011–2012 catalog records; selected 2014 records appear for related F300 variants.\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-00-00 \/ -01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF225NCA, F225XCA, F225NCB, F225XB\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected 2014 and 2021 catalog records.\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-01-00 \/ -02-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF250NCA\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected 2014 and 2021 catalog records.\u003c\/td\u003e\n\u003ctd\u003e6CE-W0078-01-00 \/ -02-00\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 examples above are not a substitute for model-year verification. The same horsepower may use different pump components across model variants and production years. Verify the original OEM reference, engine model and serial-number range before installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump repair kit without housing\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected Yamaha V6 four-stroke outboard lower-unit water pumps\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eReplacement service part; professional installation is recommended\u003c\/dd\u003e\n\u003cdt\u003eHousing Included\u003c\/dt\u003e\n\u003cdd\u003eNo\u003c\/dd\u003e\n\u003cdt\u003eBrand Status\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement, not genuine Yamaha OEM\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Water pump impeller — Yamaha reference 6CE-44352-00-00\u003c\/li\u003e\n\u003cli\u003e1 x Impeller key — Yamaha reference 90280-04M05-00\u003c\/li\u003e\n\u003cli\u003e1 x Outer O-ring — Yamaha reference 93210-94003-00\u003c\/li\u003e\n\u003cli\u003e1 x O-ring — Yamaha reference 93210-37M67-00\u003c\/li\u003e\n\u003cli\u003e4 x Water-pump bolts — Yamaha reference 97095-08045-00\u003c\/li\u003e\n\u003cli\u003e2 x Oil seals — Yamaha reference 93104-22M07-00\u003c\/li\u003e\n\u003cli\u003e1 x Cartridge insert — Yamaha reference 6AW-44322-00-00\u003c\/li\u003e\n\u003cli\u003e1 x Water-pump gasket — Yamaha reference 6CE-44315-00-00\u003c\/li\u003e\n\u003cli\u003e1 x Wear plate — Yamaha reference 6CE-44323-01-00\u003c\/li\u003e\n\u003cli\u003e4 x Bolt washers\u003c\/li\u003e\n\u003cli\u003e2 x Dowel pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePackage contents are for the repair-kit configuration without housing. The water-pump housing is not included.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and place the outboard in neutral.\u003c\/li\u003e\n\u003cli\u003eSupport the outboard securely and remove the lower unit according to the engine manufacturer's service procedure.\u003c\/li\u003e\n\u003cli\u003eLocate the water-pump assembly on top of the gearcase and remove the retaining hardware.\u003c\/li\u003e\n\u003cli\u003eLift off the existing pump components and note the orientation of the impeller, key, seals and gaskets.\u003c\/li\u003e\n\u003cli\u003eClean and inspect the reusable housing, base and mating surfaces. Replace the housing or other damaged components if they are scored, warped or corroded.\u003c\/li\u003e\n\u003cli\u003eInstall the supplied seals, o-rings, gasket, wear plate, insert and key in the correct positions.\u003c\/li\u003e\n\u003cli\u003eInstall the new impeller while rotating the driveshaft in the direction specified by the engine service manual so the vanes seat correctly.\u003c\/li\u003e\n\u003cli\u003eReinstall the reusable water-pump housing and tighten the fasteners to the manufacturer's torque specification.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit, ensuring correct alignment of the water tube, driveshaft and shift shaft.\u003c\/li\u003e\n\u003cli\u003eRefill the gearcase lubricant if it was drained during service and install the drain screw with the required gasket.\u003c\/li\u003e\n\u003cli\u003eRun the engine in water or with the correct flushing equipment and verify a strong tell-tale stream and normal operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit include the water-pump housing?\u003c\/summary\u003e\u003cp\u003eNo. This is the repair-kit configuration without housing. Reuse the existing housing only if it passes inspection and is free from scoring, distortion and excessive corrosion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich Yamaha part numbers are associated with this kit?\u003c\/summary\u003e\u003cp\u003eCatalog records associate this repair-kit family with 6CE-W0078-00-00, 6CE-W0078-01-00 and 6CE-W0078-02-00. The correct reference depends on the engine model and production year.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this the same as Sierra 18-3471?\u003c\/summary\u003e\u003cp\u003eNo. The reviewed Sierra catalog identifies 18-3471 as a water-pump repair-kit configuration with housing, while 18-3470 is identified as the configuration without housing. Package contents and application should be checked before substituting between them.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every Yamaha F225, F250 or F300?\u003c\/summary\u003e\u003cp\u003eNo. These horsepower families include multiple model variants and production years. Confirm the exact model designation, year, serial-number range and OEM reference before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eA weak or missing tell-tale stream, an overheating alarm, steam from the exhaust or a damaged, brittle or deformed impeller can indicate a cooling-system problem. Stop operation if the engine overheats and inspect the cooling system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on the engine manufacturer's schedule and operating conditions. Saltwater, sand, silt and extended storage can increase wear. Follow the service schedule for your exact engine and inspect the pump whenever the lower unit is serviced.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a genuine Yamaha OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for an aftermarket replacement repair kit. Yamaha reference numbers are provided only to identify the application and cross-reference the component.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the exact engine model, year and serial-number range before ordering.\u003c\/li\u003e\n\u003cli\u003eDo not rely on horsepower alone to determine fitment.\u003c\/li\u003e\n\u003cli\u003eCompare the old components and pump configuration with the listed contents before installation.\u003c\/li\u003e\n\u003cli\u003eUse the engine manufacturer's service manual for disassembly, torque values, seal installation and final testing.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement and is not supplied with a water-pump housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical aftermarket components for routine marine service and repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and fitment information are provided to help confirm the correct replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Support\u003c\/strong\u003e — Verify the exact model and component configuration before installation or ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723799204155,"sku":"SIE-17KY008","price":30.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_F225F_-_F225B_-_F250D_-_F300B_-_F300C_6CE-W0078-01-00_-_JLM_MARINE-8289141.jpg?v=1763032103"},{"product_id":"water-pump-impeller-fits-yamaha-f225-f250-f300-4-2l-v6-outboards-replaces-6ce-44352-00-00","title":"Water Pump Impeller for Yamaha F225F, F250D \u0026 F300B 4-Stroke Outboards – Replaces 6CE-44352-00-00","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis is a single aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e for Yamaha Outboard 4-stroke engines, listed for the Yamaha F225F, F250D and F300B models. It is designed to restore water-pump circulation and help maintain proper engine cooling during operation.\u003c\/p\u003e\n\u003cp\u003eThe impeller is supplied as an individual replacement component. It replaces or cross-references Yamaha \u003cstrong\u003e6CE-44352-00-00\u003c\/strong\u003e and \u003cstrong\u003e6CE-44352-01-00\u003c\/strong\u003e. Additional reference numbers include Mercury Marine \u003cstrong\u003e8M6010334\u003c\/strong\u003e, Sierra Marine \u003cstrong\u003e18-45617-1\u003c\/strong\u003e and \u003cstrong\u003e18-45617\u003c\/strong\u003e, and GLM \u003cstrong\u003e89300\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement water pump impeller for Yamaha F225F, F250D and F300B outboards.\u003c\/li\u003e\n  \u003cli\u003eSuitable for the engine cooling system when the listed model and original impeller references match.\u003c\/li\u003e\n  \u003cli\u003eSold as the impeller only, not as a complete water pump repair kit.\u003c\/li\u003e\n  \u003cli\u003eInspect the water-pump housing, wear plate, key and seals before installation; replace worn related components as needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these manufacturer and aftermarket references to compare the replacement impeller with your original part before ordering.\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00-00\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\u003e6CE-44352-01-00\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\u003e8M6010334\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-45617-1\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-45617\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e89300\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 Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company fitment record for this individual impeller lists the following Yamaha 4-stroke outboard models. Confirm the model designation and original impeller number before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated Horsepower\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\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\u003eF225F\u003c\/td\u003e\n        \u003ctd\u003e225 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00-00 \/ 6CE-44352-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF250D\u003c\/td\u003e\n        \u003ctd\u003e250 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00-00 \/ 6CE-44352-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF300B\u003c\/td\u003e\n        \u003ctd\u003e300 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00-00 \/ 6CE-44352-01-00\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\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha Outboard engine cooling system\u003c\/dd\u003e\n  \u003cdt\u003eEngine Type\u003c\/dt\u003e\n  \u003cdd\u003e4-stroke outboard\u003c\/dd\u003e\n  \u003cdt\u003eFitment\u003c\/dt\u003e\n  \u003cdd\u003eYamaha F225F, F250D and F300B\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement impeller; verify the original part and pump assembly before installation\u003c\/dd\u003e\n  \u003cdt\u003eIncluded Quantity\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 Water pump impeller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003csmall\u003eThis listing does not include a complete water pump repair kit. Gaskets, wear plates, housing components, seals, bolts and the impeller key are not included unless specifically stated in the order details.\u003c\/small\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm that your engine model and original impeller reference match the compatibility information above.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and follow the outboard manufacturer's service procedure before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit and water-pump cover according to the service manual.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller and inspect the pump housing, wear plate, seals and impeller key for damage or wear.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement impeller with the existing or separately sourced key correctly seated on the driveshaft.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water-pump components using suitable gaskets and seals where required.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit and test the cooling-water flow before returning the engine to normal service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if the water-pump impeller needs replacement?\u003c\/summary\u003e\n  \u003cp\u003ePossible signs include weak or absent telltale water flow, an overheating warning, reduced cooling performance or visibly damaged, cracked, brittle or missing impeller vanes. Always diagnose the complete cooling system.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this listing include the impeller key?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for one impeller only. The key and other water-pump service parts are not included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this a complete water pump repair kit?\u003c\/summary\u003e\n  \u003cp\u003eNo. It is an individual replacement impeller. A complete repair kit may contain additional gaskets, seals, bolts, plates, a cup, housing components and a key.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this fit every Yamaha 225 HP, 250 HP or 300 HP outboard?\u003c\/summary\u003e\n  \u003cp\u003eNo. The listed fitment is limited to Yamaha F225F, F250D and F300B models. Confirm the exact model designation and original part number before ordering.\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 impeller intended for applications using the listed Yamaha OEM references.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the exact engine model, original impeller and dimensions against the listed application before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not operate an outboard with inadequate cooling-water flow or an overheating warning.\u003c\/li\u003e\n  \u003cli\u003eFollow the manufacturer's service manual and use appropriate marine-service safety procedures.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if you are not experienced with outboard 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 common outboard service applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Selection\u003c\/strong\u003e — Product information is organized around engine models and manufacturer reference numbers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService-Ready Support\u003c\/strong\u003e — Compare your original part and engine model before ordering to help ensure the correct replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723799236923,"sku":"17IY018","price":19.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_for_Yamaha_225_250_300HP_6CE-44352-00_-_JLM_MARINE-8288720.jpg?v=1763032105"},{"product_id":"water-pump-impeller-fits-yamaha-225hp-250hp-300hp-4-stroke-outboards-replaces-6ce-44352-00-6ce-44352-01","title":"Water Pump Impeller for Yamaha F225F, F250D and F300B 4-Stroke Outboards – Replaces 6CE-44352-00","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis is a high-quality aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e for selected Yamaha 4-stroke outboard motors. It is listed for Yamaha F225F, F250D and F300B models, including the corresponding counter-rotation LF versions where the same water-pump application is used.\u003c\/p\u003e\n\u003cp\u003eThis impeller replaces Yamaha OEM part number \u003cstrong\u003e6CE-44352-00\u003c\/strong\u003e. It is a replacement impeller only, intended for installation in the applicable OEM water pump assembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSix-blade impeller design for the engine cooling-water pump.\u003c\/li\u003e\n  \u003cli\u003eDesigned for direct installation in the applicable OEM water pump housing.\u003c\/li\u003e\n  \u003cli\u003eNeoprene impeller material with a molded hub.\u003c\/li\u003e\n  \u003cli\u003eConfirm the OEM number, engine model designation and impeller dimensions before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Reference\u003c\/h2\u003e\n\u003cp\u003eUse the reference below to compare the impeller with the part removed from your engine.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Reference\"\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\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\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eFitment is based on the Yamaha model designations associated with OEM impeller reference 6CE-44352-00. Model, stroke and rotation conditions should be checked together 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\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF225F\u003c\/td\u003e\n        \u003ctd\u003e225\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\u003c\/td\u003e\n        \u003ctd\u003eVerify model code and water-pump application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF250D\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\u003c\/td\u003e\n        \u003ctd\u003eVerify model code and water-pump application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF300B\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\u003c\/td\u003e\n        \u003ctd\u003eVerify model code and water-pump application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eLF225F\u003c\/td\u003e\n        \u003ctd\u003e225\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\u003c\/td\u003e\n        \u003ctd\u003eCounter-rotation version; verify the complete model designation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eLF250D\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\u003c\/td\u003e\n        \u003ctd\u003eCounter-rotation version; verify the complete model designation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eLF300B\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e6CE-44352-00\u003c\/td\u003e\n        \u003ctd\u003eCounter-rotation version; verify the 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\u003eOutboard water pump impeller\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha F225F, F250D and F300B 4-stroke applications, including listed LF counter-rotation versions\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003eYamaha 6CE-44352-00\u003c\/dd\u003e\n  \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n  \u003cdd\u003e6\u003c\/dd\u003e\n  \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n  \u003cdd\u003e90 mm (3.543 in)\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Height\u003c\/dt\u003e\n  \u003cdd\u003e36 mm (1.417 in)\u003c\/dd\u003e\n  \u003cdt\u003eHub\/Shaft Diameter\u003c\/dt\u003e\n  \u003cdd\u003eApproximately 22.5 mm (0.886 in)\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eNeoprene with a molded 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\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe woodruff key, gaskets, wear plate, water pump housing and other service components are not included unless separately stated in the order details.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eGeneric installation steps are provided below. For a detailed guide specific to your Yamaha outboard, we recommend this \u003ca href=\"https:\/\/www.youtube.com\/watch?v=c2Dkq9vTHV8\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"\u003etechnician-led video\u003c\/a\u003e.\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and remove the engine cowling.\u003c\/li\u003e\n  \u003cli\u003ePlace a drain pan under the lower unit and remove the drain screw to empty the gearcase oil if required by the service procedure.\u003c\/li\u003e\n  \u003cli\u003eRemove the fasteners securing the lower unit to the midsection and carefully lower the unit.\u003c\/li\u003e\n  \u003cli\u003eLocate the water pump housing on top of the gearcase and remove its mounting fasteners.\u003c\/li\u003e\n  \u003cli\u003eLift the housing to expose the old impeller and note the blade orientation and key position.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, clean the housing and wear plate, and install the replacement with the key correctly aligned.\u003c\/li\u003e\n  \u003cli\u003eApply a light coat of marine grease or suitable lubricant to the inside of the housing, then reinstall the housing while keeping the blades oriented in the direction of rotation.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit and refill the gearcase lubricant according to the engine service procedure.\u003c\/li\u003e\n  \u003cli\u003eRun the engine only with an appropriate water supply and verify a strong, steady stream from the telltale outlet before returning the engine to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my impeller needs replacing?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs of a worn or damaged impeller include engine overheating at low speed, a weak or absent telltale stream, or visible cracking, brittleness or deformation of the blades. Inspect the impeller whenever the water pump is serviced and replace it if wear or damage is found.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this impeller fit every Yamaha 225 HP, 250 HP or 300 HP outboard?\u003c\/summary\u003e\n  \u003cp\u003eNo. The application must match the specific model designation and OEM reference. This listing is associated with F225F, F250D and F300B applications and their listed LF counter-rotation versions. Check the engine identification label and the original impeller before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this impeller include the woodruff key or gaskets?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for the impeller only. The woodruff key, housing gaskets, wear plate and other water-pump service parts are not included unless specifically listed with your order.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan it be used on counter-rotation engines?\u003c\/summary\u003e\n  \u003cp\u003eThe cataloged application includes listed LF counter-rotation versions associated with the F225F, F250D and F300B model families. Verify the complete engine model and OEM impeller reference before installation; do not rely on horsepower alone.\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, not a Yamaha-branded OEM component. Yamaha part number 6CE-44352-00 is provided as an application reference.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the engine model, stroke, rotation designation and OEM part number before purchase.\u003c\/li\u003e\n  \u003cli\u003eCompare the replacement impeller with the original part, including blade count and dimensions.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine without an adequate water supply.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if you are not familiar with lower-unit or water-pump service.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, 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 supply aftermarket parts for routine outboard maintenance and repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and fitment details are provided to help you compare the replacement with your original part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService Support\u003c\/strong\u003e — Use the engine model and original part number when contacting support about compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723799269691,"sku":"UK17IY018","price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_for_Yamaha_225_250_300_HP_-_JLM_MARINE-8288613.jpg?v=1763032106"}],"url":"https:\/\/seasierra.com\/collections\/yamaha-4-stroke-outboard-engine-parts-225-300hp.oembed","provider":"SeaSierra","version":"1.0","type":"link"}