{"product_id":"thermostat-190-for-cummins-isb-pai-181866-3954830-4090093-3974371-4929644","title":"Thermostat 190° for Cummins ISB PAI# 181866 3954830 4090093 3974371 4929644","description":"\u003ch2\u003eThermostat 190° for Cummins ISB PAI# 181866\u003c\/h2\u003e\u003cp\u003eThis 190°F thermostat for Cummins ISB engines, with PAI# 181866 and cross-reference numbers 3954830, 4090093, 3974371, and 4929644, regulates engine coolant flow for optimal temperature control. It is a reliable replacement part for Cummins ISB diesel engines, commonly used in medium-duty trucks and commercial vehicles.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis 190°F thermostat for Cummins ISB is engineered to maintain the proper engine temperature, ensuring efficient combustion and reduced emissions. It cross-references to multiple OEM part numbers, including 3954830, 4090093, 3974371, and 4929644, making it a versatile drop-in replacement. This thermostat for Cummins ISB is built for durability and consistent performance in demanding conditions.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e190°F opening temperature for consistent heat management\u003c\/li\u003e\n\u003cli\u003eCross-references to OEM numbers 3954830, 4090093, 3974371, and 4929644\u003c\/li\u003e\n\u003cli\u003eHigh-quality wax pellet actuator for reliable thermal response\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant construction for long service life\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds original equipment specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Cummins ISB 5.9L and 6.7L engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUse in commercial truck fleets for routine cooling system maintenance\u003c\/li\u003e\n\u003cli\u003eSuitable for generator sets powered by Cummins ISB engines\u003c\/li\u003e\n\u003cli\u003eCommon in agricultural and construction equipment applications\u003c\/li\u003e\n\u003cli\u003eHelps prevent engine overheating during long operational hours\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\u003e181866, 3954830, 4090093, 3974371, 4929644\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e190°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCummins ISB\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 purpose of the cross-reference numbers? \u003cstrong\u003eA:\u003c\/strong\u003e They allow you to match this thermostat to multiple OEM part numbers, confirming compatibility with your specific Cummins ISB engine. Always verify your original part number against the list before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I install this thermostat myself? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, if you have moderate mechanical experience. Drain the coolant, remove the housing, replace the thermostat, and refill with fresh coolant. Always torque the housing bolts to the engine manufacturer's specification.\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":45562728480854,"sku":"ZZ3F03023","price":46.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_1c35a313-02b1-40cc-9655-18c5fac16dcf.jpg?v=1789251280","url":"https:\/\/www.solidspare.com\/products\/thermostat-190-for-cummins-isb-pai-181866-3954830-4090093-3974371-4929644","provider":"Solid Spare","version":"1.0","type":"link"}