{"product_id":"thermostat-50-c-804540-853704-fits-mercury-mariner-2-2-5-3-5-4-5-6-25-30-hp","title":"Thermostat 50°C 804540 853704 Fits MERCURY MARINER 2 2.5 3.5 4 5 6 25 30 HP","description":"\u003ch2\u003eThermostat for Mercury Mariner\u003c\/h2\u003e\u003cp\u003eThis thermostat for Mercury Mariner outboards regulates engine temperature by opening at 50°C, ensuring optimal operating conditions for 2, 2.5, 3.5, 4, 5, 6, 25, and 30 HP models, with OEM cross-reference numbers 804540 and 853704.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis thermostat is a replacement part for Mercury Mariner outboard engines, maintaining consistent coolant flow. It opens at 50°C to keep the motor within its ideal temperature range. Suitable for small horsepower models from 2 to 30 HP, it ensures reliable performance in various conditions.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpens at 50°C for accurate temperature control\u003c\/li\u003e\n\u003cli\u003eConstructed from durable materials to resist corrosion\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Mercury Mariner outboards\u003c\/li\u003e\n\u003cli\u003eCompatible with 2, 2.5, 3.5, 4, 5, 6, 25, and 30 HP engines\u003c\/li\u003e\n\u003cli\u003eOEM cross-reference numbers 804540 and 853704\u003c\/li\u003e\n\u003cli\u003eEnsures proper coolant flow and prevents overheating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Mercury Mariner 2 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 2.5 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 3.5 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 4 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 5 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 6 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 25 HP\u003c\/li\u003e\n\u003cli\u003efor Mercury Mariner 30 HP\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplaces a worn thermostat to maintain proper engine temperature\u003c\/li\u003e\n\u003cli\u003eUsed in small outboard motors for fishing, dinghies, and auxiliary power\u003c\/li\u003e\n\u003cli\u003eEnsures quick warm-up and consistent cooling in various water conditions\u003c\/li\u003e\n\u003cli\u003eIdeal for routine maintenance and troubleshooting overheating or overcooling\u003c\/li\u003e\n\u003cli\u003eWorks with both Mercury and Mariner branded engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e804540, 853704\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHorsepower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2, 2.5, 3.5, 4, 5, 6, 25, 30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What is the opening temperature of this thermostat? \u003cstrong\u003eA:\u003c\/strong\u003e It opens at 50°C, which is the specified temperature for these Mercury Mariner models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this thermostat come with a gasket? \u003cstrong\u003eA:\u003c\/strong\u003e It typically does not include a gasket, so reuse the existing one if in good condition or purchase a new gasket separately.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":45556771782742,"sku":"ZZ3E02366","price":73.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_780da56f-39c9-4c26-9b0a-458488e51373.jpg?v=1789227027","url":"https:\/\/www.solidspare.com\/products\/thermostat-50-c-804540-853704-fits-mercury-mariner-2-2-5-3-5-4-5-6-25-30-hp","provider":"Solid Spare","version":"1.0","type":"link"}