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Dorman 904-378 Diesel Exhaust Fluid Heater Compatible with Select Volkswagen Models (OE FIX)

4.7 (5) Write Review
Free shipping on orders over $29.99

$274.31

$ 99 .00 $99.00

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


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. [Volkswagen Passat: 2012, 2013, 2014, 2015]


Reginald
Reviewed in the United States on April 21, 2025
Installed and worked great, top quality product!
Rick S.
Reviewed in the United States on April 17, 2025
Excellent part for the VW TDI works very wellI hope it continues to work for a long time.
Robert Throckmorton
Reviewed in the United States on October 23, 2024
This is the second heater in less than six months. I went the cheap route the first time only to find that once my DEF fluid level was too low the heater failed. I replaced it with this Dorman and I am very satisfied with the performance and more confident that I will likely never have to replace again so long as I have this car.
Jim
Reviewed in the United States on April 3, 2024
Great fit
Customer
Reviewed in the United States on June 27, 2023
Had to drop tank and diagnose new issue after installing. Found that the suction tube wasnt drilled thru so pump couldn’t pick up def in tank.