Fitment Notes: AirDog FP-100 1998.5-2004 Dodge Cummins w/o In-Tank FP - A4SPBD001 
The compact AirDog provides the most effective technology designed specifically for diesel pickups to remove water, particulates, vapor and entrained air from diesel fuel. The AirDog replaces the Cummins factory lift pump and filter system. Your High Performance Dodge Cummins engine demands higher fuel flows. Yet, higher fuel flows increase the vacuum at the fuel pump and agitation in the fuel tank. These factors generate additional air/vapor in the fuel system preventing your engine from producing maximum power and efficiency. 
Small & Compact: Only 7"L X 10"T X 3.2"W 
Single Piece Pump Body: Replaces the old 3 piece pump design reducing the number of parts, unit size, and weight. This results in a sleek, low profile pump assembly and eliminates the need for leaky, messy gaskets! 
Mounts to frame: No Drilling required! 
Removes Air and Vapor from Diesel Fuel 
Pure Diesel Fuel Reaching Engine 
High Flow Rates of Fuel to Engine 
Longer Injector Life 
Increased Injection Pump Life 
Increased Fuel Economy 
Optimized Engine Performance 
Increased Torque Output 
Improves Throttle Response