{"product_id":"westerbeke-thermostat-77c-822-0377","title":"Westerbeke Thermostat 77°C (170°F) – 822-0377","description":"\u003cp data-start=\"114\" data-end=\"452\"\u003eThe Westerbeke Thermostat 822-0377 is a genuine OEM 77°C (170°F) thermostat designed for Westerbeke marine diesel and gasoline engines as well as generator sets. This thermostat regulates coolant flow to maintain proper engine operating temperature, ensuring efficient combustion, reduced internal wear, and stable performance under load.\u003c\/p\u003e\n\u003cp data-start=\"454\" data-end=\"659\"\u003eCalibrated to open at 77°C (170°F), this thermostat is commonly used in closed-loop (freshwater cooled) Westerbeke systems, allowing engines to run at optimal temperature for fuel efficiency and longevity.\u003c\/p\u003e\n\u003chr data-start=\"661\" data-end=\"664\"\u003e\n\u003ch3 data-start=\"666\" data-end=\"682\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"683\" data-end=\"960\"\u003e\n\u003cli data-start=\"683\" data-end=\"720\"\u003eGenuine Westerbeke OEM thermostat\u003c\/li\u003e\n\u003cli data-start=\"721\" data-end=\"760\"\u003e\u003cstrong data-start=\"723\" data-end=\"758\"\u003e77°C \/ 170°F temperature rating\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"761\" data-end=\"814\"\u003eMaintains consistent engine operating temperature\u003c\/li\u003e\n\u003cli data-start=\"815\" data-end=\"872\"\u003eDesigned for marine diesel and generator applications\u003c\/li\u003e\n\u003cli data-start=\"873\" data-end=\"933\"\u003eCorrosion-resistant construction for marine environments\u003c\/li\u003e\n\u003cli data-start=\"934\" data-end=\"960\"\u003eDirect OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"962\" data-end=\"965\"\u003e\n\u003ch3 data-start=\"967\" data-end=\"991\"\u003eEngine Compatibility\u003c\/h3\u003e\n\u003cp data-start=\"992\" data-end=\"1065\"\u003eUsed across a wide range of Westerbeke engines and generators, including:\u003c\/p\u003e\n\u003cul data-start=\"1067\" data-end=\"1187\"\u003e\n\u003cli data-start=\"1067\" data-end=\"1103\"\u003eWesterbeke marine diesel engines\u003c\/li\u003e\n\u003cli data-start=\"1104\" data-end=\"1142\"\u003eWesterbeke gasoline generator sets\u003c\/li\u003e\n\u003cli data-start=\"1143\" data-end=\"1187\"\u003eUniversal (by Westerbeke) marine engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1189\" data-end=\"1217\"\u003eCommon applications include:\u003c\/p\u003e\n\u003cul data-start=\"1218\" data-end=\"1315\"\u003e\n\u003cli data-start=\"1218\" data-end=\"1270\"\u003e20B, 30B, 5.0 BCD series (and similar platforms)\u003c\/li\u003e\n\u003cli data-start=\"1271\" data-end=\"1315\"\u003eVarious BTG \/ BTD \/ BEG generator models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1317\" data-end=\"1442\"\u003e✔ Typically used in \u003cstrong data-start=\"1337\" data-end=\"1374\"\u003efreshwater\/closed cooling systems\u003c\/strong\u003e\u003cbr data-start=\"1374\" data-end=\"1377\"\u003e✔ May include bypass-style thermostat depending on engine model\u003c\/p\u003e\n\u003cp data-start=\"1444\" data-end=\"1616\"\u003eWesterbeke thermostats are used across multiple engine families, so exact fitment must be verified by engine model or serial number. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1618\" data-end=\"1621\"\u003e\n\u003ch3 data-start=\"1623\" data-end=\"1655\"\u003eSerial Number Fitment Notice\u003c\/h3\u003e\n\u003cp data-start=\"1656\" data-end=\"1820\"\u003eWesterbeke uses multiple thermostat variations across similar engine models. Always confirm compatibility using your engine model and serial number before ordering.\u003c\/p\u003e\n\u003chr data-start=\"1822\" data-end=\"1825\"\u003e\n\u003ch3 data-start=\"1827\" data-end=\"1863\"\u003eWhen This Part Needs Replacement\u003c\/h3\u003e\n\u003cul data-start=\"1864\" data-end=\"2078\"\u003e\n\u003cli data-start=\"1864\" data-end=\"1916\"\u003eEngine overheating or running hotter than normal\u003c\/li\u003e\n\u003cli data-start=\"1917\" data-end=\"1969\"\u003eEngine not reaching proper operating temperature\u003c\/li\u003e\n\u003cli data-start=\"1970\" data-end=\"2006\"\u003eFluctuating temperature readings\u003c\/li\u003e\n\u003cli data-start=\"2007\" data-end=\"2043\"\u003eThermostat sticking or corrosion\u003c\/li\u003e\n\u003cli data-start=\"2044\" data-end=\"2078\"\u003eRoutine cooling system service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2080\" data-end=\"2083\"\u003e\n\u003ch3 data-start=\"2085\" data-end=\"2107\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul data-start=\"2108\" data-end=\"2336\"\u003e\n\u003cli data-start=\"2108\" data-end=\"2167\"\u003eReplace thermostat gasket or O-ring during installation\u003c\/li\u003e\n\u003cli data-start=\"2168\" data-end=\"2210\"\u003eInstall with spring side toward engine\u003c\/li\u003e\n\u003cli data-start=\"2211\" data-end=\"2247\"\u003eEnsure proper seating in housing\u003c\/li\u003e\n\u003cli data-start=\"2248\" data-end=\"2296\"\u003eInspect coolant system for scale or blockage\u003c\/li\u003e\n\u003cli data-start=\"2297\" data-end=\"2336\"\u003eVerify operation after installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2338\" data-end=\"2341\"\u003e\n\u003ch3 data-start=\"2343\" data-end=\"2400\"\u003eAlternate \/ Superseded \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul data-start=\"2401\" data-end=\"2565\"\u003e\n\u003cli data-start=\"2401\" data-end=\"2429\"\u003eWesterbeke: \u003cstrong data-start=\"2415\" data-end=\"2427\"\u003e822-0377\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2430\" data-end=\"2466\"\u003eEquivalent \/ Related: \u003cstrong data-start=\"2454\" data-end=\"2464\"\u003e037043\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2467\" data-end=\"2514\"\u003eSierra: \u003cstrong data-start=\"2477\" data-end=\"2512\"\u003e23-3602 (application dependent)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2515\" data-end=\"2565\"\u003eOther Westerbeke refs may vary by engine model\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2567\" data-end=\"2570\"\u003e\n\u003ch3 data-start=\"2572\" data-end=\"2594\"\u003eParts Desk Insight\u003c\/h3\u003e\n\u003cp data-start=\"2595\" data-end=\"2889\"\u003eWesterbeke thermostats are not one-size-fits-all even when temperature ratings match. The 77°C version is commonly used across mid-range diesel and generator units, but housing depth and bypass configuration can vary. Always match the physical design if you don’t have the original part number.\u003c\/p\u003e\n\u003chr data-start=\"2891\" data-end=\"2894\"\u003e\n\u003ch3 data-start=\"2896\" data-end=\"2908\"\u003eShipping\u003c\/h3\u003e\n\u003cp data-start=\"2909\" data-end=\"2974\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"FVW","offers":[{"title":"Default Title","offer_id":43563793973284,"sku":"822-0377","price":55.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/89abf145-4b49-4b23-8b4e-6a83b5f823c9.png?v=1774394456","url":"https:\/\/marisolmarine.com\/products\/westerbeke-thermostat-77c-822-0377","provider":"Marisol Marine Company","version":"1.0","type":"link"}