{"product_id":"mercury-outboard-thermostat-140f-8m0162139","title":"Mercury Outboard Thermostat 140°F – 8M0162139","description":"\u003cp data-start=\"191\" data-end=\"332\"\u003eThe \u003cstrong data-start=\"195\" data-end=\"241\"\u003eMercury \/ Quicksilver 8M0162139 Thermostat\u003c\/strong\u003e is a genuine OEM \u003cstrong data-start=\"259\" data-end=\"286\"\u003e140°F (60°C) thermostat\u003c\/strong\u003e designed for modern Mercury outboard engines.\u003c\/p\u003e\n\u003cp data-start=\"334\" data-end=\"649\"\u003eThis thermostat controls coolant flow through the engine, allowing it to warm up quickly and maintain a stable operating temperature under load. The \u003cstrong data-start=\"483\" data-end=\"504\"\u003e140°F calibration\u003c\/strong\u003e is specifically engineered for high-output outboard applications where lower operating temperatures are required for durability and performance.\u003c\/p\u003e\n\u003cp data-start=\"651\" data-end=\"948\"\u003eIt features a \u003cstrong data-start=\"665\" data-end=\"695\"\u003eself-cleaning valve design\u003c\/strong\u003e, allowing debris and contaminants in the cooling system to pass through without sticking the thermostat closed. Combined with corrosion-resistant materials, this ensures long service life in saltwater environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"950\" data-end=\"953\"\u003e\n\u003ch2 data-start=\"955\" data-end=\"974\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"958\" data-end=\"974\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"975\" data-end=\"1290\"\u003e\n\u003cli data-start=\"975\" data-end=\"1017\"\u003eGenuine Mercury \/ Quicksilver OEM part\u003c\/li\u003e\n\u003cli data-start=\"1018\" data-end=\"1057\"\u003e\n\u003cstrong data-start=\"1020\" data-end=\"1036\"\u003e140°F (60°C)\u003c\/strong\u003e temperature rating\u003c\/li\u003e\n\u003cli data-start=\"1058\" data-end=\"1104\"\u003eDesigned for modern \u003cstrong data-start=\"1080\" data-end=\"1102\"\u003e4-stroke outboards\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1105\" data-end=\"1153\"\u003eSelf-cleaning valve reduces sticking\/failure\u003c\/li\u003e\n\u003cli data-start=\"1154\" data-end=\"1208\"\u003eCorrosion-resistant construction for saltwater use\u003c\/li\u003e\n\u003cli data-start=\"1209\" data-end=\"1263\"\u003eMaintains proper engine temperature and efficiency\u003c\/li\u003e\n\u003cli data-start=\"1264\" data-end=\"1290\"\u003eDirect OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1292\" data-end=\"1295\"\u003e\n\u003ch2 data-start=\"1297\" data-end=\"1324\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1300\" data-end=\"1324\"\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"1326\" data-end=\"1378\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1330\" data-end=\"1378\"\u003eMercury 4-Stroke Outboards (Serial-Specific)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1379\" data-end=\"1402\"\u003eFits engines including:\u003c\/p\u003e\n\u003cul data-start=\"1403\" data-end=\"1561\"\u003e\n\u003cli data-start=\"1403\" data-end=\"1427\"\u003e\u003cstrong data-start=\"1405\" data-end=\"1425\"\u003e175 HP V6 (3.4L)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1428\" data-end=\"1452\"\u003e\u003cstrong data-start=\"1430\" data-end=\"1450\"\u003e200 HP V6 (3.4L)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1453\" data-end=\"1477\"\u003e\u003cstrong data-start=\"1455\" data-end=\"1475\"\u003e225 HP V6 (3.4L)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1478\" data-end=\"1502\"\u003e\u003cstrong data-start=\"1480\" data-end=\"1500\"\u003e250 HP V8 (4.6L)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1503\" data-end=\"1527\"\u003e\u003cstrong data-start=\"1505\" data-end=\"1525\"\u003e300 HP V8 (4.6L)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1528\" data-end=\"1561\"\u003e\u003cstrong data-start=\"1530\" data-end=\"1559\"\u003e300R \/ 450R Racing models\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1563\" data-end=\"1607\"\u003e➡️ Applies to engines with serial numbers:\u003c\/p\u003e\n\u003cul data-start=\"1608\" data-end=\"1672\"\u003e\n\u003cli data-start=\"1608\" data-end=\"1672\"\u003e\n\u003cstrong data-start=\"1610\" data-end=\"1632\"\u003e2B529482 and newer\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1674\" data-end=\"1677\"\u003e\n\u003ch2 data-start=\"1679\" data-end=\"1709\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1682\" data-end=\"1709\"\u003eImportant Fitment Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1710\" data-end=\"1936\"\u003e\n\u003cli data-start=\"1710\" data-end=\"1771\"\u003e✔ Designed for \u003cstrong data-start=\"1727\" data-end=\"1769\"\u003emodern Mercury 4-stroke outboards only\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1772\" data-end=\"1815\"\u003e✔ Used in \u003cstrong data-start=\"1784\" data-end=\"1813\"\u003eraw water cooling systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1816\" data-end=\"1878\"\u003e❌ Not compatible with older carbureted or 2-stroke engines\u003c\/li\u003e\n\u003cli data-start=\"1879\" data-end=\"1936\"\u003e❌ Not interchangeable with 160°F or 170°F thermostats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1938\" data-end=\"1941\"\u003e\n\u003ch2 data-start=\"1943\" data-end=\"1964\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1946\" data-end=\"1964\"\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1965\" data-end=\"2188\"\u003e\n\u003cli data-start=\"1965\" data-end=\"1995\"\u003ePart Number: \u003cstrong data-start=\"1980\" data-end=\"1993\"\u003e8M0162139\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1996\" data-end=\"2036\"\u003eTemperature Rating: \u003cstrong data-start=\"2018\" data-end=\"2034\"\u003e140°F (60°C)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2037\" data-end=\"2064\"\u003eType: Engine thermostat\u003c\/li\u003e\n\u003cli data-start=\"2065\" data-end=\"2097\"\u003eOperation: Wax-element valve\u003c\/li\u003e\n\u003cli data-start=\"2098\" data-end=\"2144\"\u003eCooling System: Raw water cooled outboards\u003c\/li\u003e\n\u003cli data-start=\"2145\" data-end=\"2188\"\u003eConstruction: Corrosion-resistant metal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2190\" data-end=\"2193\"\u003e\n\u003ch2 data-start=\"2195\" data-end=\"2217\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2198\" data-end=\"2217\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2218\" data-end=\"2290\"\u003e\n\u003cli data-start=\"2218\" data-end=\"2290\"\u003eThermostat only\u003cbr data-start=\"2235\" data-end=\"2238\"\u003e\u003cem data-start=\"2238\" data-end=\"2288\"\u003e(Seals\/O-rings sold separately unless specified)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2292\" data-end=\"2295\"\u003e\n\u003ch2 data-start=\"2297\" data-end=\"2336\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2300\" data-end=\"2336\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2337\" data-end=\"2524\"\u003e\n\u003cli data-start=\"2337\" data-end=\"2359\"\u003eEngine overheating\u003c\/li\u003e\n\u003cli data-start=\"2360\" data-end=\"2411\"\u003eEngine running too cold (thermostat stuck open)\u003c\/li\u003e\n\u003cli data-start=\"2412\" data-end=\"2440\"\u003eTemperature fluctuations\u003c\/li\u003e\n\u003cli data-start=\"2441\" data-end=\"2481\"\u003eDebris-related sticking or corrosion\u003c\/li\u003e\n\u003cli data-start=\"2482\" data-end=\"2524\"\u003eRoutine service on high-hour outboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2526\" data-end=\"2529\"\u003e\n\u003ch2 data-start=\"2531\" data-end=\"2556\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2534\" data-end=\"2556\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2557\" data-end=\"2713\"\u003e\n\u003cli data-start=\"2557\" data-end=\"2599\"\u003eReplace seals\/O-rings at the same time\u003c\/li\u003e\n\u003cli data-start=\"2600\" data-end=\"2636\"\u003eInstall with correct orientation\u003c\/li\u003e\n\u003cli data-start=\"2637\" data-end=\"2676\"\u003eInspect cooling passages for debris\u003c\/li\u003e\n\u003cli data-start=\"2677\" data-end=\"2713\"\u003eVerify proper temp after install\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2715\" data-end=\"2718\"\u003e\n\u003ch2 data-start=\"2720\" data-end=\"2762\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2723\" data-end=\"2762\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2764\" data-end=\"2792\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2768\" data-end=\"2792\"\u003eOEM Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2793\" data-end=\"2899\"\u003e\n\u003cli data-start=\"2793\" data-end=\"2833\"\u003eMercury \/ Quicksilver: \u003cstrong data-start=\"2818\" data-end=\"2831\"\u003e8M0162139\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2834\" data-end=\"2899\"\u003eReplaces: \u003cstrong data-start=\"2846\" data-end=\"2859\"\u003e8M0137816\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2901\" data-end=\"2904\"\u003e\n\u003ch2 data-start=\"2906\" data-end=\"2923\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2909\" data-end=\"2921\"\u003eShipping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2924\" data-end=\"2991\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e\n\u003chr data-start=\"2993\" data-end=\"2996\"\u003e\n\u003ch3 data-start=\"2998\" data-end=\"3025\"\u003e💡 Parts Desk Insight\u003c\/h3\u003e\n\u003cp data-start=\"3026\" data-end=\"3199\"\u003eThese newer Mercury thermostats rarely fail closed—\u003cstrong data-start=\"3077\" data-end=\"3122\"\u003emost failures are debris-related sticking\u003c\/strong\u003e, so if you’re replacing one, it’s worth checking the whole cooling system 👍\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563922882596,"sku":"8M0162139","price":198.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/0fffbdc9-e307-4578-a517-bd581abb7261.png?v=1773269901","url":"https:\/\/marisolmarine.com\/products\/mercury-outboard-thermostat-140f-8m0162139","provider":"Marisol Marine Company","version":"1.0","type":"link"}