This is the AirDog II-4G DF-165 fuel system for the 1994-1998 P-Pump 12V Cummins. This system 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. 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 the factory 3/8? suction line once the module is modified. This is a 165GPH (Gallon Per Hour) fuel system for moderately modified trucks.