{"title":"Johnson 2-Stroke Outboard Engine Parts 9.9-70HP","description":"\u003csection id=\"hero\" style=\"padding:16px;\"\u003e\n  \u003cp\u003eThis page is for Johnson 2‑Stroke 9.9–70HP outboard engines. It helps you find compatible parts and service information, with maintenance tips, common replacement items, and troubleshooting guidance. You can also browse the main Johnson\/Evinrude collection. Scroll to the bottom of this page to start browsing parts for this engine, and on the collection page use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block;padding:10px 16px;background:#0b5ea8;color:#fff;text-decoration:none;border-radius:4px;\"\u003eBrowse All Johnson\/Evinrude Parts\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 9.9–70HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the model\/serial plate on the transom bracket or swivel bracket. Record the full model code and serial number.\u003c\/li\u003e\n    \u003cli\u003eDecode the suffix letters: shaft length (S\/L\/X), tiller or remote control, and electric start. Example: a code ending in “S” typically indicates short shaft.\u003c\/li\u003e\n    \u003cli\u003ePlatform cues: 9.9–30 HP models are usually twin‑cylinder 2‑strokes; 40–70 HP models are typically inline‑3 2‑strokes. Carburetor count and intake layout can help distinguish them.\u003c\/li\u003e\n    \u003cli\u003eMatch year\/era by cowling style and label, but always confirm with the model code before ordering parts.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"platforms\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eEngine \/ Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eSmall Twin‑Cylinder (9.9–30 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\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‑2, carbureted 2‑Stroke, manual or electric start\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eJ10\/J9.9, J15, J20, J25, J30 (various shaft lengths and control types)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eLight weight, easy portability, simple carb service, broad parts availability\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eMany gaskets, impellers, and ignition items interchange within the 9.9\/15 family; verify model code for carb and ignition variations.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eMid‑Range Inline‑3 (40–70 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\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, remote or tiller control\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eJ40, J48\/J50, J60, J65, J70 (various mid‑sections and gearcases)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eStrong mid‑range torque, proven reliability, straightforward maintenance\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eMany 40–70 HP triples share water pump kits and anodes; propellers and gearcases vary by hub\/spline—confirm diameter and spline count.\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=\"padding:16px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for typical recreational use. Always follow your official Johnson\/Evinrude service manual for procedures and exact intervals.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\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\u003eInspect for water (milky) and metal debris; replace seals if contamination is present.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-service-maintenance-kits\"\u003eJohnson\/Evinrude Service Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eInspect and gap; replace if fouled or worn. Use plugs specified for your model code.\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 \/ in‑line filter\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eReplace sooner if fuel restriction or debris is found.\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 seasons (or 200 hours)\u003c\/td\u003e\n        \u003ctd\u003eService more frequently in sandy\/silty or weedy water.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eWater Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAnodes (zinc\/aluminum)\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hours; replace when 50% gone\u003c\/td\u003e\n        \u003ctd\u003eChoose alloy based on water type (salt\/brackish\/fresh).\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e2‑Stroke fuel\/oil system\u003c\/td\u003e\n        \u003ctd\u003eCheck each season\u003c\/td\u003e\n        \u003ctd\u003ePremix models: use quality TC‑W3 oil at recommended ratio (commonly 50:1). Oil‑injection models: inspect pump output and hoses for leaks\/age.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-hoses\"\u003eJohnson\/Evinrude Hoses\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePropeller inspection\u003c\/td\u003e\n        \u003ctd\u003eEach trip \/ after impacts\u003c\/td\u003e\n        \u003ctd\u003eRemove to check for fishing line; repair\/replace if bent or chipped.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude Propellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eLower unit seals (if needed)\u003c\/td\u003e\n        \u003ctd\u003eAs required\u003c\/td\u003e\n        \u003ctd\u003eService seals if water intrusion or leaks are detected.\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    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:16px;\"\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 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: \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\u003ePropellers \u0026amp; Hubs: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Seals: \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeak telltale or overheat alarm\u003c\/td\u003e\n        \u003ctd\u003eInspect intake screens for blockage; verify thermostat function; check impeller condition and housing wear.\u003c\/td\u003e\n        \u003ctd\u003eWater pump repair kit, thermostat, intake screen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck prop for damage or wrong pitch; examine spark plugs; look for clogged jets or restricted fuel filter.\u003c\/td\u003e\n        \u003ctd\u003ePropeller, spark plugs, fuel filter, carburetor kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd\u003eConfirm choke\/primer operation; drain stale fuel; inspect fuel hoses and fittings for air leaks; evaluate spark strength.\u003c\/td\u003e\n        \u003ctd\u003eSpark plugs, fuel hose, in‑line fuel filter, carburetor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eExcessive smoke at idle (2‑Stroke)\u003c\/td\u003e\n        \u003ctd\u003eVerify premix ratio; avoid extended idling; for oil‑injection, check pump setting and leaks; confirm thermostat closes.\u003c\/td\u003e\n        \u003ctd\u003eHoses, thermostat, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise or milky gear oil\u003c\/td\u003e\n        \u003ctd\u003eDrain and inspect gear oil; check for fishing line behind prop; pressure\/vacuum test gearcase for seal leaks.\u003c\/td\u003e\n        \u003ctd\u003eLower unit seal kit, prop shaft seals, gear oil\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=\"padding:16px;\"\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 items interchange within families (e.g., 9.9\/15 twins or 40–70 inline‑3 triples), but carburetion, ignition, and gearcase details can change by year and model code. Always confirm using your exact model\/serial and shaft length.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the water pump impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule, service the impeller every two seasons (or about 200 hours), and sooner if the telltale weakens, the engine overheats, or you run in sandy\/silty conditions.\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 gear oil every 100 hours or annually, and always before off‑season storage. If oil appears milky or contaminated, address seal issues before further use.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat details help confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the full model code and serial number, horsepower, shaft length (S\/L\/X), control type (tiller or remote), and whether it has electric start. Clear photos of the nameplate and the part area also help.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px;\"\u003e\n  \u003cp\u003eReady to find the right parts? Browse the main Johnson\/Evinrude collection and use Filter \u0026amp; Sort to narrow by horsepower, year, and model.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block;padding:10px 16px;background:#0b5ea8;color:#fff;text-decoration:none;border-radius:4px;\"\u003eShop Johnson\/Evinrude Parts\u003c\/a\u003e\u003c\/p\u003e\n  \u003cp style=\"color:#444;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"thermostat-60-c-140-f-fits-suzuki-marine-9-9-70hp-replaces-17670-94402-17670-94400-17670-94404","title":"140°F\/60°C Outboard Thermostat – Suzuki DF\/DT and Johnson\/Evinrude 10–70 HP","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003e140°F\/60°C marine outboard thermostat\u003c\/strong\u003e is a replacement temperature-control component for selected Suzuki DF and DT outboard engines and Johnson\/Evinrude outboards. It helps regulate cooling-system temperature by opening at approximately 60°C (140°F), supporting the engine's normal operating temperature.\u003c\/p\u003e\n\u003cp\u003eThe company catalog lists this thermostat for Suzuki outboards from 25 to 70 HP and for Johnson\/Evinrude applications from 10 to 70 HP. Because fitment can vary by model, year, and serial number, confirm the original thermostat number and the complete engine model before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e140°F\/60°C rating:\u003c\/strong\u003e Designed for applications requiring a 60°C thermostat.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket replacement:\u003c\/strong\u003e Replaces the listed OEM and aftermarket reference numbers when the application matches.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCooling-system function:\u003c\/strong\u003e Helps maintain the intended operating temperature of a compatible marine outboard.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle thermostat:\u003c\/strong\u003e This listing is for one thermostat, not a multi-piece kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following numbers as reference points and verify the number against your engine or service documentation before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or Reference\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n\u003ctd\u003e5031758\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e0769184\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003e17670-94400 \/ 17670-94401 \/ 17670-94402\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003e17670-94403 \/ 17670-94404\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003ctd\u003e18-S944\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\u003eThe company catalog identifies the following Suzuki model families and power ranges. Model suffixes, production years, and serial-number limits can affect fitment, so use the part-number cross-reference as well as the model information.\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 Family\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke or Application\u003c\/th\u003e\n\u003cth\u003eDocumented Year Information\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF9.9, DF15\u003c\/td\u003e\n\u003ctd\u003e9.9–15\u003c\/td\u003e\n\u003ctd\u003eFour-stroke applications\u003c\/td\u003e\n\u003ctd\u003eDF applications listed from 1996–2011 in the company notes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF25, DF30\u003c\/td\u003e\n\u003ctd\u003e25–30\u003c\/td\u003e\n\u003ctd\u003eFour-stroke applications\u003c\/td\u003e\n\u003ctd\u003eDF25\/DF30 applications listed for 2000–2006\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF40, DF50\u003c\/td\u003e\n\u003ctd\u003e40–50\u003c\/td\u003e\n\u003ctd\u003eFour-stroke applications\u003c\/td\u003e\n\u003ctd\u003eDF40\/DF50 applications listed for 1999–2010\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF60, DF70\u003c\/td\u003e\n\u003ctd\u003e60–70\u003c\/td\u003e\n\u003ctd\u003eFour-stroke applications\u003c\/td\u003e\n\u003ctd\u003eDF60\/DF70 applications listed for 1998–2009\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDT9.9, DT15, DT20\u003c\/td\u003e\n\u003ctd\u003e9.9–20\u003c\/td\u003e\n\u003ctd\u003eTwo-stroke applications\u003c\/td\u003e\n\u003ctd\u003eApplications listed for 1986–2004\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDT25, DT30\u003c\/td\u003e\n\u003ctd\u003e25–30\u003c\/td\u003e\n\u003ctd\u003eTwo-stroke applications\u003c\/td\u003e\n\u003ctd\u003eApplications listed for 1986–2002\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDT40\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003eTwo-stroke applications\u003c\/td\u003e\n\u003ctd\u003eApplications listed for 1986–2004\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003eSelected outboard models\u003c\/td\u003e\n\u003ctd\u003e10–70\u003c\/td\u003e\n\u003ctd\u003eApplication-specific; catalog evidence includes two-stroke models\u003c\/td\u003e\n\u003ctd\u003eVerify exact model, year, and serial number\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\u003eMarine outboard engine thermostat\u003c\/dd\u003e\n  \u003cdt\u003eTemperature Rating\u003c\/dt\u003e\n  \u003cdd\u003e140°F (60°C)\u003c\/dd\u003e\n  \u003cdt\u003eOpening Temperature\u003c\/dt\u003e\n  \u003cdd\u003eApproximately 140°F (60°C)\u003c\/dd\u003e\n  \u003cdt\u003eApplication Range\u003c\/dt\u003e\n  \u003cdd\u003eSelected Suzuki, Johnson, and Evinrude outboard applications from 10 to 70 HP\u003c\/dd\u003e\n  \u003cdt\u003eProduct Construction\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement component\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 140°F\/60°C thermostat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA housing gasket is not listed as included. Reuse or replacement of the gasket should be determined during installation, and a new gasket is recommended when required by the engine manufacturer.\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 or follow the engine manufacturer's safety procedure.\u003c\/li\u003e\n  \u003cli\u003eLocate the thermostat housing and place a suitable drain pan beneath the work area.\u003c\/li\u003e\n  \u003cli\u003eRemove the housing cover carefully and note the original thermostat orientation.\u003c\/li\u003e\n  \u003cli\u003eRemove the old thermostat and clean the mating surfaces without damaging the housing.\u003c\/li\u003e\n  \u003cli\u003eInstall the new thermostat in the same orientation as the original part.\u003c\/li\u003e\n  \u003cli\u003eInstall a suitable new housing gasket if required, then refit the cover and tighten the fasteners to the manufacturer's specification.\u003c\/li\u003e\n  \u003cli\u003eRestore the cooling system as required, start the engine, and check for leaks and proper water flow.\u003c\/li\u003e\n  \u003cli\u003eConfirm that the engine reaches its normal operating temperature during a controlled test.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat does the 140°F\/60°C rating mean?\u003c\/summary\u003e\u003cp\u003eIt identifies the approximate temperature at which the thermostat begins to open and regulate cooling-system flow for a compatible engine.\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 thermostat intended for applications that cross-reference to the listed OEM numbers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the package include a gasket?\u003c\/summary\u003e\u003cp\u003eNo gasket is listed as included. Check the condition of the existing gasket and the engine manufacturer's service instructions before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill it fit every Suzuki, Johnson, or Evinrude engine from 10 to 70 HP?\u003c\/summary\u003e\u003cp\u003eNo. The stated horsepower range is an application guide, not a universal fitment claim. Verify the exact model, year, serial number, stroke, and original thermostat part number before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy should I verify the original part number?\u003c\/summary\u003e\u003cp\u003eThermostat fitment can change between model versions and serial-number ranges even when horsepower is the same. Matching the original number is the safest way to confirm compatibility.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a thermostat problem?\u003c\/summary\u003e\u003cp\u003ePossible symptoms include overheating, running below normal temperature, unstable temperature behavior, or reduced cooling-system performance. Inspect the complete cooling system before replacing the thermostat.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original thermostat number and complete engine identification before purchase.\u003c\/li\u003e\n  \u003cli\u003eKeep model, year, serial number, horsepower, and stroke information together when checking fitment.\u003c\/li\u003e\n  \u003cli\u003eNever work on a hot engine or open a pressurized cooling-system component while hot.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component and is not manufactured by Suzuki, Johnson, Evinrude, or OMC.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the required service procedure or torque specifications are unfamiliar.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We provide aftermarket components for maintenance and repair of marine engines and systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Cataloging\u003c\/strong\u003e — Product references are presented to help customers compare OEM numbers and engine applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport for Fitment Checks\u003c\/strong\u003e — When model and part-number information is available, confirm those details before ordering to reduce compatibility errors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723973398843,"sku":"21TH032","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21TH032_1_e06ef7f7-6f4d-4aa0-97be-842b5752b220.jpg?v=1763038898"}],"url":"https:\/\/seasierra.com\/collections\/johnson-2-stroke-outboard-engine-parts-9-9-70hp.oembed","provider":"SeaSierra","version":"1.0","type":"link"}