{"product_id":"dorman-904-394-diesel-exhaust-fluid-def-heater","title":"Dorman 904-394 Diesel Exhaust Fluid (DEF) Heater","description":"\u003ch2\u003eOverview of Dorman Diesel Exhaust Fluid Heater 904-394\u003c\/h2\u003e\u003cp\u003eThe Dorman 904-394 Diesel Exhaust Fluid (DEF) Heater is designed specifically for heavy-duty Chevrolet and GMC trucks. This DEF heater ensures optimal fluid temperature for efficient emission control in cold weather conditions, supporting reliable operation of your Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, or Silverado 3500 HD.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecific fit for Chevrolet and GMC heavy-duty trucks\u003c\/li\u003e\n\u003cli\u003ePlastic black housing with durable construction\u003c\/li\u003e\n\u003cli\u003eTwo electrical connectors with male and female terminals\u003c\/li\u003e\n\u003cli\u003eIncludes mounting hardware for straightforward installation\u003c\/li\u003e\n\u003cli\u003eResistor-type level sensor for accurate fluid monitoring\u003c\/li\u003e\n\u003cli\u003eFemale inlet and outlet fittings for secure hose connections\u003c\/li\u003e\n\u003cli\u003eWire insulation made of plastic with multiple wire colors for easy identification\u003c\/li\u003e\n\u003cli\u003eHeight dimension of 191 mm and inside diameter of 115 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 904-394 DEF Heater is engineered to maintain the proper temperature of diesel exhaust fluid in cold environments, preventing crystallization and ensuring consistent DEF flow. Its black plastic housing provides corrosion resistance and durability under engine bay conditions. The heater features two electrical connectors with a combination of male and female terminals, supporting secure and reliable electrical connections. The resistor-type level sensor integrated into the unit helps monitor DEF levels accurately, contributing to the emission system's overall performance. Designed with female inlet and outlet fittings, this heater allows for easy integration with existing DEF lines. The included mounting hardware simplifies installation, making it a direct replacement part for specific Chevrolet and GMC models.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis DEF heater is compatible with the following heavy-duty trucks:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Sierra 2500 HD\u003c\/li\u003e\n\u003cli\u003eChevrolet Sierra 3500 HD\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2500 HD\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 3500 HD\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 2500 HD\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 3500 HD\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by the DEF Heater\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents DEF freezing and crystallization in cold weather\u003c\/li\u003e\n\u003cli\u003eMaintains proper DEF temperature for emission system efficiency\u003c\/li\u003e\n\u003cli\u003eReduces risk of DEF line blockages and pump failures\u003c\/li\u003e\n\u003cli\u003eSupports accurate DEF level sensing to avoid warning lights\u003c\/li\u003e\n\u003cli\u003eHelps maintain compliance with emission control regulations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eThe Dorman 904-394 DEF Heater comes with all necessary mounting hardware for a secure fit. Ensure electrical connectors are properly matched to the male and female terminals to avoid connection issues. Verify that the female inlet and outlet fittings align correctly with your vehicle’s DEF lines. It is recommended to inspect wiring insulation and routing to prevent damage from heat or abrasion during installation. Professional installation is advised to maintain system integrity and performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for emission control components. The 904-394 DEF Heater undergoes rigorous quality checks to ensure durability and functionality. Please refer to Dorman’s warranty policy for specific coverage details on this emission control part.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44327366951093,"sku":"BKKY-904-394","price":211.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_904394_Fro.jpg?v=1775011788","url":"https:\/\/www.partcatalog.com\/products\/dorman-904-394-diesel-exhaust-fluid-def-heater","provider":"PartCatalog","version":"1.0","type":"link"}