{"product_id":"yamaha-outboard-thermostat-kit-sierra-18-3608-fits-115-225-hp-v4-v6-outboards-1991-2002","title":"Sierra 18-3608 Thermostat Kit, Replaces 6J8-12414-A0-00, for Yamaha 2-Stroke Outboard Engines","description":"\u003cp\u003eThe Sierra 18-3608 Thermostat Kit is a complete cooling system repair kit for Yamaha 2-stroke outboard engines. Replacing a worn or stuck-open thermostat is one of the most common fixes for an outboard that runs cold, overheats, or shows erratic temperature swings, and this kit supplies both parts needed to do the job correctly in one purchase: a thermostat and the matching gasket. The thermostat is rated to open at 60 degrees Celsius, matching the original equipment opening temperature so the engine reaches and holds proper operating temperature for efficient combustion and long-term reliability.\u003c\/p\u003e\u003cp\u003eSierra engineers this kit to meet or exceed the original equipment part it replaces, so it installs the same way the factory thermostat and gasket did, with no modification required. Because the kit bundles the gasket with the thermostat, there is no need to source a separate gasket or risk reusing an old one that no longer seals properly. This is a direct fit for the Yamaha 2-stroke outboard cooling system application covered by part number 18-3608.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3608\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermostat Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Yamaha 2-Stroke Outboard Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Temperature Rating:\u003c\/strong\u003e 60 degrees Celsius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Thermostat and gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 6J8-12414-A0-00, 66M-12411-01-00, 62Y-12414-00-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282256807\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eYamaha 2-stroke outboard engines using the cooling system thermostat and gasket set covered by OEM number 6J8-12414-A0-00.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e6J8-12414-A0-00\u003c\/li\u003e\n\u003cli\u003e66M-12411-01-00\u003c\/li\u003e\n\u003cli\u003e62Y-12414-00-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-3608 thermostat kit?\u003c\/strong\u003e The 18-3608 kit includes a thermostat and the matching gasket needed to complete the cooling system repair, so no separate gasket purchase is required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature does the thermostat open at?\u003c\/strong\u003e The thermostat in the 18-3608 kit is rated to open at 60 degrees Celsius, matching the original equipment opening temperature for the Yamaha 2-stroke cooling system it services.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-3608 kit replace?\u003c\/strong\u003e This kit replaces OEM numbers 6J8-12414-A0-00, 66M-12411-01-00, and 62Y-12414-00-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the Sierra 18-3608 designed for?\u003c\/strong\u003e It is designed for Yamaha 2-stroke outboard engines that use the cooling system thermostat and gasket covered by OEM number 6J8-12414-A0-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3608 thermostat kit weigh?\u003c\/strong\u003e The Sierra 18-3608 Thermostat Kit weighs 0.08 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3608 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is a Sierra aftermarket kit engineered to meet or exceed the original equipment part it replaces, so it installs and performs the same as the factory thermostat and gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit come with the gasket, or just the thermostat?\u003c\/strong\u003e Both are included: the 18-3608 kit contains the thermostat and its matching gasket in a single package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The UPC for the Sierra 18-3608 Thermostat Kit is 808282256807.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I confirm the 18-3608 kit fits my Yamaha outboard?\u003c\/strong\u003e Check that your engine's original thermostat or gasket carries the OEM number 6J8-12414-A0-00, 66M-12411-01-00, or 62Y-12414-00-00, since the 18-3608 kit replaces all three.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3608 include a warranty?\u003c\/strong\u003e Yes, the Sierra 18-3608 Thermostat Kit is covered under Sierra's standard limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-3608 kit be installed without modifying the engine?\u003c\/strong\u003e Yes, the 18-3608 thermostat and gasket are designed as a direct replacement, installing the same way as the original equipment parts with no modification needed.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988154855643,"sku":"SIE-18-3608","price":28.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3608_lg__28822.1558126080.500.750.jpg?v=1785188299","url":"https:\/\/www.goodvibesmarina.com\/products\/yamaha-outboard-thermostat-kit-sierra-18-3608-fits-115-225-hp-v4-v6-outboards-1991-2002","provider":"Good Vibes Marina","version":"1.0","type":"link"}