PureFlow AirDog FP-100-4G 1998.5-2004 Dodge Cummins WITH In-Tank Fuel Pump - FP-100-4GThis is the AirDog I FP 100 4G fuel system for the 1998. 5 2004 Dodge Ram VP44 and early CP3 Cummins with the in tank fuel pump. This diesel lift pump mounts to the frame rail using the supplied sandwich plate mounting system. A 1 2" draw straw is used to pull fuel from the tank to bypass the factory fuel pump. The pressure side connects directly to the VP44 or CP3 injection pump, bypassing the factory fuel filter housing. The AirDog Air Vapor return