Dorman 904-394 Diesel Exhaust Fluid Heater

The factory DEF heater on certain vehicles often fails from fluid intrusion. This Dorman OE FIX solution modifies the OEM design to address this failure point and increase reliability. With over 80,000 products backed by a team of product engineers and experts based in the United States, Dorman is the first choice of automotive professionals, backyard mechanics, and do-it-yourselfers all over North America.