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.
Upgraded replacement – this diesel exhaust fluid (DEF) heater features additional protection from fluid intrusion Restores performance – designed to match the fit and function of the original equipment part Thoroughly tested – each design undergoes cyclical heater element fatigue testing Trustworthy quality – backed by team of engineers in the United States Vehicle model years this part fits: Chevrolet Silverado 2500 HD: 2012, 2013, 2014, 2015, 2016 Chevrolet Silverado 3500 HD: 2012, 2013, 2014, 2015, 2016 GMC Sierra 2500 HD: 2012, 2013, 2014, 2015, 2016 GMC Sierra 3500 HD: 2012, 2013, 2014, 2015, 2016
