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Dorman 904-394 Diesel Exhaust Fluid Heater Compatible with Select Chevrolet/GMC Models (OE FIX)

Free shipping on orders over $29.99

$147.99

$ 67 .99 $67.99

In Stock
  • 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 - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool



Zach
Reviewed in the United States on September 4, 2024
Was a direct replacement, great quality product and it fixed my issue.
Matt
Reviewed in the United States on August 18, 2024
Replaced this unit in my truck, it quit working after 8 months. I'll need to replace it again before my speed is limited to 4mph. I'd rather not have these systems on my truck as they have an adverse effect on the mechanical system and have cost me thousands in maintaining over five years. It's nice to have reasonably priced parts to make repairs, but they don't seem to last long.
Customer
Reviewed in the United States on July 14, 2024
Bought this and replaced it 2 months ago. Took a 1000 mileage trip then level sensors failed. Stick with OEM parts.
Wayne Keech
Reviewed in the United States on December 22, 2024
Perfect fit and function
Jerome
Reviewed in the United States on December 15, 2024
Did it myself with a Utube video. Working over a year now.
Joe Dennis
Reviewed in the United States on April 29, 2024
2015 2500 HD with LML/ CP4: drop the DEF tank, disconnect the main harness, clean the top of the DEF tank.Remove the old heater and install this one. Put the tank back in place and clear the code. Has been working for months now with no issues.
A. Campa
Reviewed in the United States on November 25, 2023
Follow install directions and easy install had my grandson help me n at 15 he understood n was able to install
Melvin Liverman
Reviewed in the United States on January 29, 2022
Don't waste your time or money on this product, buy O.E.M. from the start. I replaced my DEF heater with this Dorman replacement. It lasted less than 100 miles! This is not the first time that I went with a Dorman product and got burned...NEVER again, I finally learned my lesson. After years of working as an auto tech and using what use to be a good replacement product, it saddens me to see their decline.
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