{"title":"Parsun 2-Stroke 3HP Outboard Motor","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is dedicated to Parsun 2‑Stroke 3HP outboard engines. Use it to find compatible replacement parts and practical service information. Below you’ll find maintenance tips, commonly replaced items, and troubleshooting guidance. You can also browse our main Parsun‑compatible parts categories. Scroll to the bottom to start browsing parts for this engine, and remember you can use the Filter \u0026amp; Sort controls on collection pages to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block; padding:10px 14px; background:#0d6efd; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse Parts Collections\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 3HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate location: Look for the model\/serial plate on the transom bracket or swivel bracket. Record the full model code and serial number.\u003c\/li\u003e\n    \u003cli\u003eReading the model code: Suffix letters often indicate shaft length (S = short ~15\", L = long ~20\") and starting\/control type (manual start, tiller handle). Note any regional code that may impact carburetor jetting and emissions labels.\u003c\/li\u003e\n    \u003cli\u003ePlatform clues: A 3HP Parsun 2‑Stroke is typically a single‑cylinder, carbureted, manual‑start portable with tiller steering. Many small units use F‑N or F‑N‑R shift and a built‑in fuel tank.\u003c\/li\u003e\n    \u003cli\u003eLubrication: These models commonly run on 50:1 fuel‑oil premix (TC‑W3). Confirm the label on your cowl and owner’s manual.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n  \u003ch3\u003ePortable 3HP Class 2‑Stroke\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 #f1f5f9;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eSingle‑cylinder carbureted 2‑Stroke, manual start, tiller steer; typical shift is F‑N (some variants F‑N‑R).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003ePortable 3–3.6HP 2‑Stroke series in short (15\") and long (20\") shaft options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eLightweight and simple design, quick acceleration, easy routine maintenance, good portability for dinghies and small aluminum boats.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eMost variants use a 50:1 fuel‑oil mix and include a small built‑in fuel tank (~1–1.5 L). Verify shaft length, shift type, and any regional model code before ordering parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for small 2‑Stroke outboards; always follow the official Parsun service manual for your exact model and operating conditions.\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 #f1f5f9;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eCheck for water intrusion or metal flakes; replace drain\/fill seals as needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower 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 #f1f5f9;\"\u003eSpark plug(s)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours; replace 100 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eVerify heat range\/gap for your model; replace if fouled or worn.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark plug\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eFuel filter \/ inline filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours; replace 100 hours or as contaminated\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eDrain\/replace to prevent lean running and hard starts.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eEvery 1–2 seasons (more often in sandy\/silty water)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eWeak tell‑tale or overheat alarms indicate service; inspect wear plate and cup.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eAnodes (corrosion protection)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours; replace when 50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eMatch anode material to your water (zinc, aluminum, magnesium).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003ePropeller inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eCheck each trip; replace as damaged\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eLook for bent blades, hub slip, or fishing line around the shaft.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eFuel\/oil mix (TC‑W3)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eEvery refuel\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eUse 50:1 mix unless your model plate\/manual specifies otherwise. Measure accurately to prevent fouling or scuffing.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\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    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion – \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eWeak tell‑tale stream \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect intake screens for debris; check impeller condition; verify water tube alignment on reassembly.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eWater pump kit, intake screen, thermostat (if equipped)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eConfirm fresh 50:1 mix; inspect spark plug condition\/gap; check for clogged pilot jet.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eSpark plug, fuel filter, carburetor gasket\/jet kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eLook for damaged prop or hub slip; verify choke operation; check for air leaks in fuel line\/connector.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003ePropeller, fuel connector\/lines, carburetor cleaning kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eExcessive smoke\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eConfirm correct oil ratio (50:1); ensure choke isn’t stuck closed; check plug for wet fouling.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e2‑stroke oil mix, choke linkage, spark plug\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eDrain oil to inspect; check for water intrusion past seals; inspect prop shaft for fishing line damage.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eLower unit seal kit, gear oil, bearings (inspection)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eMany wear items for portable Parsun 2‑Stroke models are similar across year ranges, but there can be differences in shaft length, shift mechanism, carburetor jetting, and ignition components. Confirm with your full model code and serial number before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, replace the impeller every 1–2 seasons, or immediately if the tell‑tale weakens, the engine overheats, or you’ve run through sand or silt. Frequent beaching or silty water warrants shorter intervals.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange at least annually or every 100 hours. Inspect for milkiness (water intrusion) or metal particles. Replace drain\/fill gaskets each service and consider a seal kit if contamination is found.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do I need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide the full model code, serial number, shaft length (S or L), shift type (F‑N or F‑N‑R), and any photos of the nameplate and the part you are replacing.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"margin-top:24px; padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts by category? Browse our collections for routine service and common components by horsepower, year, and model filters where available.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block; margin-top:8px; padding:10px 14px; background:#0d6efd; color:#fff; text-decoration:none; border-radius:6px;\"\u003eStart Browsing Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#475569;\"\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-2-stroke-3-250-hp-replaces-6e5-12411-02-00-688-12411-10-00","title":"Thermostat – Fits Yamaha 2-Stroke 3-250 HP (Replaces 6E5-12411-02-00, 688-12411-10-00)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eThermostat – Fits Yamaha 2-Stroke 3-250 HP\u003c\/strong\u003e is engineered for a wide range of Yamaha 2-Stroke outboard motors, covering models from 3 HP to 250 HP manufactured between 1984 and 2009. It plays a critical role in maintaining proper engine operating temperature for optimal performance and fuel efficiency.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for numerous Yamaha, Sierra, Parsun, and Mallory part numbers, ensuring broad interchangeability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls directly to the engine block for a straightforward fit.\u003c\/li\u003e\n\u003cli\u003eDesigned for use in closed cooling systems.\u003c\/li\u003e\n\u003cli\u003ePackage includes the thermostat, housing gasket, and seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \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\u003e6E5-12411-00-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-01-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-10-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-20-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-30-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e688-12411-00-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e688-12411-01-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e688-12411-10-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6H3-12411-11-00\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3540\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3622\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eParsun\u003c\/td\u003e\n\u003ctd\u003eT15-04000010\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-43035\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part fits a variety of Yamaha standard 2-Stroke and HPDI outboards.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Yamaha 2-Stroke Outboards Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e9.9F\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e15F\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e25N\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994 and up\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e30D\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2000\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC30\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993 and newer\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e40V\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1989–1997\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e50D\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–2000\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-02-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e75C\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–2000\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e90A\u003c\/td\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2009\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990–1999\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e115C\u003c\/td\u003e\n\u003ctd\u003e115\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–2009\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e130B\u003c\/td\u003e\n\u003ctd\u003e130\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1989–2001\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e140C\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–1993\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e150F\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2009\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e175D\u003c\/td\u003e\n\u003ctd\u003e175\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–2000\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e200F, 200G\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2009\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e225D, 225G\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990–2009\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e250A, 250B\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990–2009\u003c\/td\u003e\n\u003ctd\u003e688-12411-11-00\u003c\/td\u003e\n\u003ctd\u003eReplaces 688-12411-00-00, 688-12411-10-00\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Yamaha 2-Stroke HPDI Outboards Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eZ150P, Z150Q\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke HPDI\u003c\/td\u003e\n\u003ctd\u003e2000–2009\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-30-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eZ175G\u003c\/td\u003e\n\u003ctd\u003e175\u003c\/td\u003e\n\u003ctd\u003e2-Stroke HPDI\u003c\/td\u003e\n\u003ctd\u003e2000–2009\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-30-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eZ200N, Z200P\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e2-Stroke HPDI\u003c\/td\u003e\n\u003ctd\u003e2000–2009\u003c\/td\u003e\n\u003ctd\u003e6E5-12411-30-00\u003c\/td\u003e\n\u003ctd\u003eSupersedes 6E5-12411-00-00, 6E5-12411-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eThermostat\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect mount to engine block\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eBrass\/stainless steel\u003c\/dd\u003e\n  \u003cdt\u003eTemperature Rating\u003c\/dt\u003e\n\u003cdd\u003e50°C (122°F) opening temperature\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor closed cooling system\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 \u003cspan style=\"color:#d0021b;\"\u003e(688-12411)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e1 x Thermostat Housing Gasket \u003cspan style=\"color:#d0021b;\"\u003e(688-12414)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e1 x Thermostat Seal \u003cspan style=\"color:#d0021b;\"\u003e(688-12412)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the engine is completely cool before beginning work.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery to prevent accidental starting.\u003c\/li\u003e\n\u003cli\u003eLocate the thermostat housing on the engine block. Place a drain pan underneath to catch any coolant.\u003c\/li\u003e\n\u003cli\u003eRemove the bolts securing the housing cover. Note their length and position if they differ.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old thermostat and gasket. Clean both mating surfaces of any old gasket material or corrosion.\u003c\/li\u003e\n\u003cli\u003eInstall the new thermostat, ensuring it is oriented correctly. Fit the new gasket and seal into place.\u003c\/li\u003e\n\u003cli\u003eRe-install the housing cover and tighten the bolts to the manufacturer's specified torque.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery, refill coolant as needed, and check for leaks after starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are signs of a failing thermostat?\u003c\/summary\u003e\u003cp\u003eA faulty thermostat can cause engine overheating (if stuck closed) or the engine to run too cool and not reach operating temperature (if stuck open). This can lead to poor performance, increased fuel consumption, and inaccurate temperature gauge readings.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAt what temperature does this thermostat open?\u003c\/summary\u003e\u003cp\u003eThis thermostat is designed to begin opening at 50°C (122°F) to allow coolant to circulate and regulate engine temperature.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I reuse my old gasket?\u003c\/summary\u003e\u003cp\u003eNo. It is critical to use the new gasket and seal included in the kit to ensure a proper, leak-free seal. Reusing old gaskets can lead to coolant leaks and overheating.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my outboard's thermostat?\u003c\/summary\u003e\u003cp\u003eReplacement intervals vary by engine manufacturer and usage, especially in saltwater environments. It is good practice to inspect it annually and consider replacement every 2-3 years as part of preventative maintenance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this part compatible with non-Yamaha engines?\u003c\/summary\u003e\u003cp\u003eYes, it is cross-referenced for compatibility with specific Parsun, Sierra, and Mallory applications. Verify your engine's OEM part number against our Part Number Matrix to confirm fitment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between OEM and this aftermarket part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement part, not an original equipment manufacturer (OEM) component. It is engineered to meet or exceed OEM specifications for fit, form, and function, using comparable materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected to ensure quality and consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast do you ship and what does it cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. Expedited shipping options, if available for your location, will be presented at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use conditions. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard return window for items that are unused and in their original packaging. Refer to our policy page or contact us for detailed instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718243225915,"sku":"GH-TH17050-Y","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/GH-TH17050-Y.png?v=1762958097"},{"product_id":"water-pump-impeller-fits-yamaha-2-2-5hp-3hp-replaces-6l5-44352-00-18-8911-h-500322","title":"Water Pump Impeller with Key for Yamaha 3HP 3A\/Malta and F2.5 Outboards – Replaces 6L5-44352-00, 18-8911","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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller with key\u003c\/strong\u003e is intended for selected Yamaha outboard applications, including Yamaha 3HP 3A\/Malta models and F2.5 outboards. It replaces the Yamaha reference \u003cstrong\u003e6L5-44352-00\u003c\/strong\u003e and the Sierra aftermarket reference \u003cstrong\u003e18-8911\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe impeller is a service part for the outboard cooling system. It is installed in the water pump and helps circulate cooling water through the engine. Always compare the original impeller, keyway and water-pump assembly before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAftermarket water pump impeller supplied with one matching key.\u003c\/li\u003e\n  \u003cli\u003eDesigned for selected Yamaha 3HP 3A\/Malta and F2.5 applications.\u003c\/li\u003e\n  \u003cli\u003eSuitable for routine water-pump maintenance when the original part number and application match.\u003c\/li\u003e\n  \u003cli\u003eNot an original Yamaha-branded part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eUse the following references to compare your existing component. A reference number alone does not replace confirmation of the complete engine model and year.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or source\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eReference type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6L5-44352-00\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\u003e6L5-44352-00-00\u003c\/td\u003e\n\u003ctd\u003eOEM reference format used in catalog applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-8911\u003c\/td\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company application records identify this impeller with key for the following Yamaha applications. Model, horsepower, stroke type and year must be checked together against the engine identification label or service documentation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or application\u003c\/th\u003e\n\u003cth\u003eRated horsepower\u003c\/th\u003e\n\u003cth\u003eStroke or application note\u003c\/th\u003e\n\u003cth\u003eRecorded year range\u003c\/th\u003e\n\u003cth\u003eOEM reference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha Outboard\u003c\/td\u003e\n\u003ctd\u003e3A \/ Malta\u003c\/td\u003e\n\u003ctd\u003e3 HP\u003c\/td\u003e\n\u003ctd\u003eTwo-stroke application record\u003c\/td\u003e\n\u003ctd\u003e1988–2002\u003c\/td\u003e\n\u003ctd\u003e6L5-44352-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha Outboard\u003c\/td\u003e\n\u003ctd\u003eF2.5\u003c\/td\u003e\n\u003ctd\u003e2.5 HP\u003c\/td\u003e\n\u003ctd\u003eApplication recorded for F2.5\u003c\/td\u003e\n\u003ctd\u003e2003–2012\u003c\/td\u003e\n\u003ctd\u003e6L5-44352-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha Outboard\u003c\/td\u003e\n\u003ctd\u003eF2.5A \/ F2.5B\u003c\/td\u003e\n\u003ctd\u003e2.5 HP\u003c\/td\u003e\n\u003ctd\u003eFour-stroke application record\u003c\/td\u003e\n\u003ctd\u003eConfirm the exact model year\u003c\/td\u003e\n\u003ctd\u003e6L5-44352-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eFitment is limited to the applications represented by these records. Do not assume compatibility with other Yamaha, Parsun or similarly rated engines solely because the horsepower is the same.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTechnical Information\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct type\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket water pump impeller with key\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Yamaha 3HP 3A\/Malta and F2.5 outboard water-pump systems\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service part; verify the original component and keyway before installation\u003c\/dd\u003e\n  \u003cdt\u003eBrand status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement, not an original Yamaha part\u003c\/dd\u003e\n  \u003cdt\u003eReference numbers\u003c\/dt\u003e\n  \u003cdd\u003eYamaha 6L5-44352-00 and 6L5-44352-00-00; Sierra 18-8911\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × aftermarket water pump impeller\u003c\/li\u003e\n  \u003cli\u003e1 × matching key\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe water-pump housing, cover, gaskets, wear plates, seals, bolts and other service components are not included unless separately stated.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the engine model, year, stroke type and original part reference before disassembly.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the spark-plug lead and follow the engine manufacturer’s safety procedures.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the service manual for your exact model.\u003c\/li\u003e\n  \u003cli\u003eOpen the water-pump housing and remove the old impeller and key.\u003c\/li\u003e\n  \u003cli\u003eClean the shaft, keyway and pump area. Inspect the housing, cover, wear plate, seals and gaskets for damage or excessive wear.\u003c\/li\u003e\n  \u003cli\u003eInstall the supplied key and impeller in the correct orientation. Do not force the impeller onto the shaft.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water pump and lower unit using the correct torque specifications and any required new seals or gaskets.\u003c\/li\u003e\n  \u003cli\u003eTest the engine in water and confirm a steady cooling-water discharge before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eProfessional installation is recommended if you are not experienced with outboard lower-unit and water-pump service.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\n  \u003cp\u003eCheck the complete engine model, horsepower, stroke type and year, then compare the original impeller and OEM reference with the compatibility table. The Yamaha reference 6L5-44352-00 or the Sierra reference 18-8911 should match your application. Contact support with the model and serial information if the application is unclear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a worn impeller?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include weak or absent tell-tale water flow, overheating, cooling-water alarms and visible cracking, brittleness or deformation of the old impeller.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes the product include the key?\u003c\/summary\u003e\n  \u003cp\u003eYes. This product is supplied as one impeller with one matching key. It is not a complete water-pump repair kit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes it include a water-pump housing or gasket set?\u003c\/summary\u003e\n  \u003cp\u003eNo. The package contains the impeller and key only. Inspect and replace other water-pump components separately as required by the service manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan it be used in saltwater?\u003c\/summary\u003e\n  \u003cp\u003eThe impeller is used in outboard cooling systems, but operating conditions affect service life. Flush the cooling system with fresh water after saltwater use and inspect the impeller regularly.\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 that references Yamaha 6L5-44352-00 and Sierra 18-8911 for identification and application comparison.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the exact engine model, year, stroke type and part reference before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine without an adequate cooling-water supply.\u003c\/li\u003e\n  \u003cli\u003eReplace damaged gaskets, seals, wear plates or pump-housing components as required.\u003c\/li\u003e\n  \u003cli\u003eFollow the manufacturer’s service manual for lower-unit removal, torque values and reassembly.\u003c\/li\u003e\n  \u003cli\u003eThis listing is for an aftermarket impeller with key, not a complete water-pump kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine replacement parts\u003c\/strong\u003e — We supply aftermarket components for routine boat and outboard maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-focused listings\u003c\/strong\u003e — Product references and fitment details are provided to support accurate part comparison.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer support\u003c\/strong\u003e — When fitment is uncertain, provide the engine model, year and serial information before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723799433531,"sku":"17IY016K","price":17.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_with_Pin_for_Yamaha_2_25_3HP_6L5-44352-00_-_JLM_MARINE-8288854.jpg?v=1763032113"}],"url":"https:\/\/seasierra.com\/collections\/parsun-2-stroke-3hp-outboard-motor.oembed","provider":"SeaSierra","version":"1.0","type":"link"}