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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. [Freightliner Sprinter 2500: 2014, 2015, 2016, 2017] - [Freightliner Sprinter 3500: 2014, 2015, 2016, 2017] - [Mercedes-Benz Sprinter 2500: 2014, 2015, 2016, 2017] - [Mercedes-Benz Sprinter 3500: 2014, 2015, 2016, 2017] - [Mercedes-Benz Sprinter: 2014, 2015, 2016, 2017, 2018]
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