{"product_id":"3974823-5292708-thermostat-for-cummins-180-5-9l-isb-4-5l-qsb-engines","title":"3974823 5292708 Thermostat for Cummins 180℉ 5.9L ISB 4.5L QSB Engines","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis aftermarket replacement thermostat is intended for Cummins 5.9L ISB, 4.5L QSB, and B-Series engine applications and cross-references part numbers 3974823 and 5292708. A thermostat regulates coolant flow through an engine cooling system to support normal temperature regulation.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRegulates coolant flow as part of the engine cooling system.\u003c\/li\u003e\n\u003cli\u003eSpecified for the listed Cummins engine applications.\u003c\/li\u003e\n\u003cli\u003eCross-references part numbers 3974823 and 5292708.\u003c\/li\u003e\n\u003cli\u003eSuitable for servicing or replacing the corresponding thermostat.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003efor Cummins 5.9L ISB engine applications\u003c\/li\u003e\n\u003cli\u003efor Cummins 4.5L QSB engine applications\u003c\/li\u003e\n\u003cli\u003efor Cummins B-Series engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn, damaged, or malfunctioning engine thermostat.\u003c\/li\u003e\n\u003cli\u003eRoutine maintenance of the engine cooling system.\u003c\/li\u003e\n\u003cli\u003eServicing the coolant flow control component associated with the engine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermostat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 180℉\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 3974823, 5292708\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Application(s):\u003c\/strong\u003e Cummins 5.9L ISB, 4.5L QSB, B-Series engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What does this thermostat do? \u003cstrong\u003eA:\u003c\/strong\u003e A thermostat regulates coolant flow through the engine cooling system to support normal operating temperature regulation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How should fitment be verified? \u003cstrong\u003eA:\u003c\/strong\u003e Compare the complete part number, including 3974823 or 5292708, and the complete engine designation, such as 5.9L ISB, 4.5L QSB, or B-Series, with the existing component and equipment documentation.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":54214374588689,"sku":"ZZ3F01217","price":35.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/s-l1600_50aa4ac7-b8f7-4be7-93b1-13470c7add1f.jpg?v=1788721583","url":"https:\/\/www.duraforce.com\/products\/3974823-5292708-thermostat-for-cummins-180-5-9l-isb-4-5l-qsb-engines","provider":"DURAFORCE","version":"1.0","type":"link"}