{"title":"Johnson 2-Stroke Outboard Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is for Johnson 2‑Stroke outboard engines. Use it to quickly find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Johnson\/Evinrude\/OMC collection, and at the bottom of this page you’ll find direct links to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#0b6; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Johnson\/Evinrude\/OMC Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your Johnson 2‑Stroke Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the identification plate: typically on the transom bracket or swivel bracket. Record the model, serial, and (if present) production code.\u003c\/li\u003e\n    \u003cli\u003eModel code basics: the letters\/numbers often encode shaft length (S\/L\/XL), starting\/controls (manual vs. electric, tiller vs. remote), and year suffix. Match these when selecting parts.\u003c\/li\u003e\n    \u003cli\u003e2‑Stroke specifics: confirm whether you have oil injection (VRO) or premix. Oil‑injected models have an external oil tank and dedicated oil lines; premix models require the correct fuel\/oil ratio per the service manual.\u003c\/li\u003e\n    \u003cli\u003ePlatform hints: small singles\/twins (portable class), midrange inline‑3 (popular 25–60 class), and larger V4\/V6 blocks share families of parts within their platform—verify before ordering.\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 Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eSmall Portable Class (Single\/Twin‑Cylinder 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 #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eLightweight single or twin‑cylinder, carbureted 2‑Stroke\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003ePortable Johnson 2‑Stroke outboards in the small HP range\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eEasy to service; compact; excellent portability\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eVerify premix vs. VRO delete; cooling and carb service are routine items\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eMidrange Inline‑3 2‑Stroke\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin-top:12px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑3, carbureted 2‑Stroke; widely used for fishing and runabouts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eJohnson midrange 2‑Stroke inline‑3 models\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eGood power‑to‑weight; simple ignition and fueling; broad parts availability\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eWater pump, spark plugs, and fuel filtration are the most frequent service points\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV4 \/ V6 2‑Stroke (Crossflow\/Looper Families)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin-top:12px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eV4 or V6, carbureted 2‑Stroke blocks used across a wide HP span\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eJohnson V4\/V6 2‑Stroke families (crossflow\/looper)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eStrong acceleration; serviceable ignition; robust gearcases\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eConfirm exact family for thermostat, ignition, and gearcase parts compatibility\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 common guidelines for Johnson 2‑Stroke outboards. Always follow your official service manual for model‑specific procedures and schedules.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eChange more often if water intrusion or heavy use; replace seals if contamination is found\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hours; replace 100 hours or as needed\u003c\/td\u003e\n        \u003ctd\u003eUse correct heat range and gap; oil‑fouling indicates mix or ignition issues\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hours; replace 100 hours or seasonally\u003c\/td\u003e\n        \u003ctd\u003eCheck for debris\/water; ensure primer bulb and lines remain pliable\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd\u003eEvery 2–3 seasons (or sooner with weak telltale)\u003c\/td\u003e\n        \u003ctd\u003eImpeller hardens over time; housing and key wear are common\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eJohnson\/Evinrude\/OMC Water Pump Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAnodes (corrosion protection)\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hours; replace when 50% gone\u003c\/td\u003e\n        \u003ctd\u003eMatch material to water type (zinc, aluminum, or magnesium as applicable)\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude\/OMC Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e2‑Stroke oil supply \/ VRO system\u003c\/td\u003e\n        \u003ctd\u003eCheck each outing; service annually\u003c\/td\u003e\n        \u003ctd\u003eUse TC‑W3 oil; inspect tank, lines, and fittings. If premix, follow specified ratio in your manual\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eOil Lines \u0026amp; Hoses\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\/bombardier-service-maintenance-kits\"\u003eJohnson\/Evinrude\/OMC Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eWater Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System Filtration: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel Delivery: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Performance: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude\/OMC Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude\/OMC Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeak telltale \/ overheat alarm\u003c\/td\u003e\n        \u003ctd\u003eInspect intake screens for blockage; verify impeller condition; confirm thermostat operation\u003c\/td\u003e\n        \u003ctd\u003eWater pump kit, thermostat, gaskets, intake screen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck for fouled plugs, clogged fuel filter, damaged or mismatched prop pitch\u003c\/td\u003e\n        \u003ctd\u003eSpark plugs, fuel filter, propeller\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd\u003eVerify primer bulb holding pressure; inspect fuel lines; clean\/rebuild carburetors; check spark\u003c\/td\u003e\n        \u003ctd\u003eFuel pump, fuel lines, carburetor kit, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eExcessive smoke (2‑Stroke)\u003c\/td\u003e\n        \u003ctd\u003eConfirm oil ratio\/VRO setting; ensure thermostat closes properly; replace fouled plugs\u003c\/td\u003e\n        \u003ctd\u003eTC‑W3 oil, thermostat, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd\u003eDrain and inspect gear oil; check for water intrusion; pressure\/vacuum test and reseal as needed\u003c\/td\u003e\n        \u003ctd\u003eLower unit seal kit, bearings, gear lube\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 Johnson 2‑Stroke years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome service items cross over within the same platform (e.g., inline‑3, V4, V6), but many parts are year- and family-specific. Always match by full model code and serial to confirm compatibility.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a preventive measure, replace the impeller every 2–3 seasons, or immediately if the telltale weakens, you encounter sand\/silt ingestion, or the engine overheats.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change the gear oil?\u003c\/summary\u003e\n    \u003cp\u003eChange lower unit gear oil at least annually or every 100 hours—whichever comes first. If the oil appears milky or contaminated, replace seals and refill after a successful pressure\/vacuum test.\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\u003eHave your model code, serial number, shaft length, and control type (tiller\/remote, manual\/electric start). For 2‑Strokes, also note whether the engine is premix or oil‑injected (VRO).\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"margin-top:24px; padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts by horsepower, year, and model? Browse the main Johnson\/Evinrude\/OMC outboard parts collection and use Filter \u0026amp; Sort to narrow your results.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#0b6; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Johnson\/Evinrude\/OMC Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#555;\"\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-140-f-60-c-fits-johnson-evinrude-60-300-hp-v4-v6-v8-replaces-0329766-0394409","title":"Thermostat 143°F\/62°C for Johnson\/Evinrude 3-Cylinder, V4 Loopcharged and V8 Outboards – Replaces 0329766, 0394409, 0434137 and 0765580","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 \u003cstrong\u003e143°F\/62°C thermostat\u003c\/strong\u003e is an aftermarket replacement for selected Johnson and Evinrude outboard cooling systems. It is listed for 3-cylinder engines from 1992 and later, as well as 90° Looper applications from 1990 through 1992. The company fitment listing also covers selected 60, 65, 70, 85, 120, 125, 140, 200, 225, 250 and 300 HP Johnson\/Evinrude applications.\u003c\/p\u003e\n\u003cp\u003eThe thermostat is supplied as a single replacement component. It is identified as a replacement for Johnson\/Evinrude and OMC references 0329766, 0394409, 0434137 and 0765580. The aftermarket reference \u003cstrong\u003eSierra 18-3500\u003c\/strong\u003e is also associated with this thermostat.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThermostat for selected Johnson\/Evinrude outboard cooling systems.\u003c\/li\u003e\n  \u003cli\u003eRated purpose: 143°F (62°C).\u003c\/li\u003e\n  \u003cli\u003eSingle thermostat replacement, not a multi-part kit.\u003c\/li\u003e\n  \u003cli\u003eUse the engine model, year and OEM reference together when confirming fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese references are provided for identification and cross-reference purposes. Confirm the complete engine application 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 or Reference\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\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n\u003ctd\u003e0329766\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n\u003ctd\u003e0394409\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n\u003ctd\u003e0434137\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n\u003ctd\u003e0765580\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3500\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\u003e13170\u003c\/td\u003e\n\u003ctd\u003eCross-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\u003eCompatibility should be confirmed using the engine's brand, horsepower, cylinder configuration, year and required thermostat reference. The available company fitment information identifies the following application groups:\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\u003eEngine Configuration\u003c\/th\u003e\n        \u003cth\u003eHorsepower Listed\u003c\/th\u003e\n        \u003cth\u003eYear or Application Condition\u003c\/th\u003e\n        \u003cth\u003eRelated References\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e3-cylinder outboard\u003c\/td\u003e\n        \u003ctd\u003e60, 65 or 70 HP\u003c\/td\u003e\n        \u003ctd\u003e1992 and later\u003c\/td\u003e\n        \u003ctd\u003e0329766, 0394409, 0434137, 0765580\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e90° Looper\u003c\/td\u003e\n        \u003ctd\u003eApplication-specific\u003c\/td\u003e\n        \u003ctd\u003e1990–1992\u003c\/td\u003e\n        \u003ctd\u003e0434137 and related references\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003eV4 Loopcharged or V8\u003c\/td\u003e\n        \u003ctd\u003e85, 120, 125, 140, 200, 225, 250 or 300 HP\u003c\/td\u003e\n        \u003ctd\u003eConfirm the exact model and year\u003c\/td\u003e\n        \u003ctd\u003e0329766, 0394409, 0434137, 0765580\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eCatalog evidence also documents reference 0434137 on specific 1993 Evinrude 120, 125 and 140 HP 2-stroke models. This supports those applications but does not by itself confirm every engine in the horsepower range.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket outboard thermostat\u003c\/dd\u003e\n  \u003cdt\u003eTemperature Rating\u003c\/dt\u003e\n  \u003cdd\u003e143°F (62°C)\u003c\/dd\u003e\n  \u003cdt\u003eProduct Format\u003c\/dt\u003e\n  \u003cdd\u003eSingle replacement thermostat\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Johnson\/Evinrude 3-cylinder, V4 Loopcharged, V8 and 90° Looper outboards\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eDirect replacement when the engine application and reference number match\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Thermostat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGaskets, seals and other installation hardware are not identified as included. Reuse or replace them only as specified by the applicable service manual.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eAllow the engine to cool completely before beginning work.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery according to the service manual and observe all applicable safety precautions.\u003c\/li\u003e\n  \u003cli\u003eLocate the thermostat housing and remove the cover using the procedure for your exact engine.\u003c\/li\u003e\n  \u003cli\u003eNote the original thermostat orientation before removing it.\u003c\/li\u003e\n  \u003cli\u003eRemove the old thermostat and clean the housing mating surfaces without damaging them.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement thermostat in the correct orientation.\u003c\/li\u003e\n  \u003cli\u003eReplace the gasket or seal if required by the service manual; no gasket is identified as included with this product.\u003c\/li\u003e\n  \u003cli\u003eReinstall the housing cover and tighten the fasteners to the manufacturer's specified torque.\u003c\/li\u003e\n  \u003cli\u003eRestore the cooling system as required for the engine and check for leaks.\u003c\/li\u003e\n  \u003cli\u003eRun the engine according to the service procedure and verify proper cooling-water flow and operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat temperature is this thermostat rated for?\u003c\/summary\u003e\u003cp\u003eThis thermostat is listed with a purpose rating of 143°F (62°C). Use the temperature specification required by your exact engine model and service manual.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich part numbers does this thermostat replace?\u003c\/summary\u003e\u003cp\u003eThe company listing identifies 0329766, 0394409, 0434137 and 0765580 as replacement references. Sierra 18-3500 and GLM 13170 are also associated cross-references.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a complete thermostat kit?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for one replacement thermostat. A gasket, seal or additional hardware is not identified as included.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every Johnson or Evinrude engine from 60 to 300 HP?\u003c\/summary\u003e\u003cp\u003eNo universal fitment should be assumed. The listed horsepower range covers selected 3-cylinder, V4 Loopcharged, V8 and 90° Looper applications. Confirm the exact engine model, year, cylinder configuration and required OEM reference before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM thermostat?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement component intended to replace the listed OEM and aftermarket references.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm compatibility?\u003c\/summary\u003e\u003cp\u003eCompare your engine's complete model identification and service-manual part number with the compatibility information above. Do not rely on horsepower alone.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWork only on a cool engine and follow the service manual for your exact model.\u003c\/li\u003e\n  \u003cli\u003eVerify the complete engine model, year, cylinder configuration and reference number before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine if the thermostat housing leaks or the cooling system does not function correctly.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component, not an OEM-branded part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical replacement components for selected outboard and marine applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Reference numbers and fitment details are provided to help match the correct part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Support\u003c\/strong\u003e — Contact support if you need help comparing your engine identification or existing part reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723980575035,"sku":"23TH621","price":28.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23TH621_1_56454ef2-ddde-485a-9d5f-4a7cfd722257.jpg?v=1763039222"}],"url":"https:\/\/seasierra.com\/collections\/johnson-2-stroke-outboard-marine-engine-parts-6.oembed","provider":"SeaSierra","version":"1.0","type":"link"}