{"product_id":"180-3974823-5292708-thermostat-for-cummins-5-9l-isb-4-5l-qsb-b-series-engines","title":"180℉ 3974823 5292708 Thermostat for Cummins 5.9L ISB 4.5L QSB B-Series Engines","description":"\u003ch2\u003eThermostat for Cummins 5.9L ISB 4.5L QSB B-Series Engines\u003c\/h2\u003e\u003cp\u003eThis 180°F thermostat, referencing OEM cross numbers 3974823 and 5292708, regulates engine coolant temperature for Cummins 5.9L ISB, 4.5L QSB, and B-Series engines. It is a direct replacement part designed to maintain optimal operating temperature and efficient engine performance. This thermostat is for Cummins engines that require a 180°F opening temperature.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis 180℉ thermostat for Cummins 5.9L ISB 4.5L QSB B-Series engines ensures your engine reaches and maintains its ideal operating temperature. It controls coolant flow to prevent overheating and reduce wear. This thermostat is a critical component for any Cummins 5.9L or 4.5L engine in demanding applications.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDesigned to open at 180°F (82°C) for consistent engine temperature\u003c\/li\u003e\n\u003cli\u003eReference numbers 3974823 and 5292708 for cross-compatibility\u003c\/li\u003e\n\u003cli\u003eDirect fit for Cummins 5.9L ISB, 4.5L QSB, and B-Series engines\u003c\/li\u003e\n\u003cli\u003ePremium construction to withstand high engine vibration and pressure\u003c\/li\u003e\n\u003cli\u003eEnsures rapid warm-up for reduced emissions and fuel consumption\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Cummins 5.9L ISB engine\u003c\/li\u003e\n\u003cli\u003efor Cummins 4.5L QSB engine\u003c\/li\u003e\n\u003cli\u003efor Cummins B-Series engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUsed in agricultural tractors and combines\u003c\/li\u003e\n\u003cli\u003eInstalled in industrial generator sets and pumps\u003c\/li\u003e\n\u003cli\u003eApplied in construction equipment and skid steer loaders\u003c\/li\u003e\n\u003cli\u003eSuitable for marine auxiliary power units\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180°F (82°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3974823, 5292708\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this thermostat a direct replacement for my Cummins 5.9L engine? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed to match the fit and function of the original thermostat, with cross references to OEM part numbers 3974823 and 5292708.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What happens if the thermostat fails? \u003cstrong\u003eA:\u003c\/strong\u003e A faulty thermostat can cause the engine to run too cold or overheat, leading to poor fuel economy and potential engine damage. Regular replacement is recommended to maintain proper cooling system operation.\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":"Part Outfitters","offers":[{"title":"Default Title","offer_id":46624713507002,"sku":"ZZ3F01221","price":35.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/2476\/1786\/files\/s-l1600_bb57b27a-0fc5-4625-94b6-06e869cac158.jpg?v=1789151233","url":"https:\/\/partoutfitters.com\/products\/180-3974823-5292708-thermostat-for-cummins-5-9l-isb-4-5l-qsb-b-series-engines","provider":"Part Outfitters","version":"1.0","type":"link"}