This is the AirDog II-5G DF-100 fuel system for the 2019-2020 RAM with the 6.7 Cummins. This diesel lift pump mounts to the frame rail using the supplied sandwich plate mounting system. A Fuel Module Upgrade Kit is installed in the factory fuel basket to pull fuel through a, factory-style, 1/2" bulkhead fitting. This will bypass the factory in-tank lift pump. The pressure side connects directly into the side of the factory fuel filter housing. The AirDog Air/Vapor return is sent back to the tank through the factory 3/8” suction line once the module is modified. This is a 100GPH (Gallon Per Hour) lift pump system for stock fuel trucks. Check out our installation manual for a list of parts that are included with this kit.


The AirDog®II-5G Fuel Preporator® is an all in one premium high pressure fuel pump and filtration system for the 6.7L Cummins diesel. The system removes water, particulates, and entrained air from the diesel fuel. The entrained air that is separated from the fuel is returned to the tank through a small return line. The fuel is delivered to the engine at the correct pressure and flow rate to meet the demands of the engine under all operating conditions.

The AirDog®II-5G systems feature a built in adjustible pressure regulator. All AirDog®II and AirDog®II-4G systems include a complete installation kit.

The AirDog®II-5G for this particular application are preset at 13-15psi from factory for a stock application. The regulator is adjustible up to 75psi for fine tuning the system for performance upgrades. WARNING: RUNNING THE PUMP ABOVE 75PSI WILL DECREASE THE LIFE OF THE PUMP SIGNIFICANTLY AND MAY VOID THE WARRANTY.

PureFlow AirDog products are manufactured in Shelbyville Indiana by a team of skilled workers with unsurpassed attention to detail and using the most stringent quality assurance.