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. Product Features:Upgraded replacement - this diesel exhaust fluid (DEF) heater features additional protection from fluid intrusionRestores performance - designed to match the fit and function of the original equipment partThoroughly tested - each design undergoes cyclical heater element fatigue testingTrustworthy quality - backed by team of engineers in the United States
