{"product_id":"thermostat-switch-sensor-3408643-3915945-for-engine-4b3-9-6b5-9-b4-5-b6-7s-4-5","title":"Thermostat Switch Sensor 3408643 3915945 for Engine 4B3.9 6B5.9 B4.5 B6.7S 4.5","description":"\u003ch2\u003eThermostat Switch Sensor\u003c\/h2\u003e\u003cp\u003eThe Thermostat Switch Sensor (OEM cross-reference 3408643, 3915945) monitors engine coolant temperature and activates cooling fan or warning systems for engines 4B3.9, 6B5.9, B4.5, B6.7S, and 4.5.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Thermostat Switch Sensor 3408643 3915945 is a temperature-activated switch that controls engine cooling components. Designed for engines like 4B3.9 and 6B5.9, this sensor ensures optimal operating temperature by engaging fans or triggering alarms. It is a direct replacement for faulty switches in various diesel and industrial engines.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision temperature calibration for accurate switching\u003c\/li\u003e\n\u003cli\u003eRugged housing resists engine compartment conditions\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM part numbers 3408643 and 3915945\u003c\/li\u003e\n\u003cli\u003eThreaded fitting for easy installation\u003c\/li\u003e\n\u003cli\u003eReliable electrical contacts for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Engine 4B3.9\u003c\/li\u003e\n\u003cli\u003efor Engine 6B5.9\u003c\/li\u003e\n\u003cli\u003efor Engine B4.5\u003c\/li\u003e\n\u003cli\u003efor Engine B6.7S\u003c\/li\u003e\n\u003cli\u003efor Engine 4.5\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMonitors coolant temperature in diesel engines\u003c\/li\u003e\n\u003cli\u003eActivates electric cooling fans when preset temperature is reached\u003c\/li\u003e\n\u003cli\u003eUsed in agricultural, construction, and industrial equipment\u003c\/li\u003e\n\u003cli\u003eCommon replacement part during engine overhaul\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\u003e3408643, 3915945\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermostat Switch Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4B3.9, 6B5.9, B4.5, B6.7S, 4.5\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 temperature does this switch trigger at? \u003cstrong\u003eA:\u003c\/strong\u003e The switch activates at a preset temperature specific to the engine model, typically around 180-200°F; check your service manual for exact specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this sensor compatible with aftermarket cooling systems? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed as a direct replacement for OEM sensors and works with most factory and aftermarket cooling fan controllers.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44962753609814,"sku":"ZZ2Z00920","price":61.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_432d07de-7ab0-4f0b-b154-6c3a4d012e47.jpg?v=1781613524","url":"https:\/\/www.solidspare.com\/products\/thermostat-switch-sensor-3408643-3915945-for-engine-4b3-9-6b5-9-b4-5-b6-7s-4-5","provider":"Solid Spare","version":"1.0","type":"link"}