Diesel Exhaust Fluid System (DEF)

Maintain the emissions system on your 2007.5-2018 Dodge 6.7L Cummins with Diesel Exhaust Fluid (DEF) System components. Diesel engines use a selective catalytic reduction system that injects DEF directly into the exhaust stream to convert nitrous oxides into water and nitrogen. Replace the damaged components in your system with the quality options available including DEF heaters, fluid pumps, and control modules. Leading brands such as Dorman offer the components needed to maintain the Diesel Exhaust Fluid (DEF) System on your vehicle.