AirDog (FP-150) Compatible with 1998.5-2004 Cummins 5.9L in any chassis On Demand Flow 150 GPH Gerotor Pump: Quieter, More Efficient & Longer Lasting! Built-in Regulator, Preset at 8 PSI Vehicle Applications: Fits all 5.9L Duramax engines in any chassis 1998.5-2004 Air Bubbles in Your Fuel are Hurting your Performance & Mileage,..