Dorman 904-632 Diesel Exhaust Fluid Heater Compatible with Select Chevrolet/GMC Models (OE FIX)

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. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Silverado 2500 HD: 2010, 2011] - [Chevrolet Silverado 3500 HD: 2010, 2011] - [GMC Sierra 2500 HD: 2010, 2011] - [GMC Sierra 3500 HD: 2010, 2011]

• 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
• Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.