This is the AirDog II-4G DF-100 fuel system for the 1994-1998 P-Pump 12V Cummins. This system mounts to the frame rail using the supplied sandwich plate mounting system. The suction side hooks up to the factory suction fitting in the fuel module. The pressure side connects directly into the side of the P-Pump, bypassing the factory fuel filter housing. The injection pump return is tied into the engine return to eliminate the need for the factory filter head. The AirDog Air/Vapor return is sent back to the tank through a filler neck tee. This is a 100GPH (Gallon Per Hour) fuel system for stock fuel trucks.