Dorman 904-394 Diesel Exhaust Fluid (DEF) Heater for Specific Chevrolet / GMC Models

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