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AirDog FP-100-4G Air/Fuel Separation System | 98.5-04 5.9L Cummins


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This is the AirDog I FP-100-4G fuel system for the 1998.5-2004 Dodge Ram VP44 and early CP3 Cummins WITHOUT the in-tank fuel pump (block-mounted fuel pump). This diesel lift pump mounts to the frame rail using the supplied sandwich plate mounting system.  Fuel is pulled from the factory sending unit in the tank to supply fuel to the AirDog. The pressure side connects directly to the VP44 or CP3 injection pump, bypassing the factory block-mounted fuel pump and fuel filter housing. The AirDog Air/Vapor return is sent back to the tank through a filler neck tee. This is a 100GPH (Gallon Per Hour) lift pump system.



  • Demand Flow Design
  • Lifetime Limited Warranty
  • Includes Wiring. Plumbing & Installation Hardware
  • Incorporates Tried-And-True 4G Motor Design
  • Improved Throttle Response
  • 100 GPH Fuel Pump
  • Faster Throttle Response

Additional information

Weight 27 lbs
Dimensions 13 × 7 × 19 in


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