Dorman 904-632 Diesel Exhaust Fluid Heater for Specific Chevrolet / GMC Models (OE FIX)

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: 2010, 2011 Chevrolet Silverado 3500 HD: 2010, 2011 GMC Sierra 2500 HD: 2010, 2011 GMC Sierra 3500 HD: 2010, 2011