The AirDog 100GPH A4SPBD002 is the original proven Air/Fuel Separation Cummins lift pump or Fuel Preporator. A lift pump system is a must have for your 2005-2018 5.9L and 6.7L Cummins. The fuel system on your diesel truck is the heart of the vehicle’s performance and reliability. This low pressure (15-17 psi) Cummins lift pump mounts to the inner frame rail using the supplied sandwich plate mounting system. The suction/fuel supply sides hook up to the supplied 1/2? draw straw installed in the fuel tank bypassing the factory in tank pump. The pressure side lines connects directly to the CP3 bypassing the factory fuel filter housing.
The AirDog 100GPH lift pump will solve the infamous P0087 & P1093 low fuel rail pressure codes. This positive supply of purified fuel being fed to your CP3 will also add performance, throttle response, and longevity to your vehicle. Due to extra stress on your fuel system from either high mileage and/or additional performance modifications, like a tuner or larger injectors, your injection pump can become weak over time. This may result in a drop of performance, reliability, and fuel economy. The supplied water separator (WS100) and fuel filter (FF100-2), that mount to the pump, filter your fuel down to a 2 micron rating which surpasses the stock fuel filters filtration capability.

The fuel, now under positive pressure flow, enters the filter. As the fuel passes through the filter media and the remaining particulate contaminates are caught and contained, the entrained air/vapor is also separated. Through the positive fuel air separation features of the patented Fuel Preporator® the separated air/vapor is discharged from the filter through the Primary Air/Vapor Discharge Port and into the return to tank passage after the regulator. The fuel passing through the filter media (free of contaminates & power robbing air/vapor and at pressures and flows to meet the needs of the engine exits the fuel filter through two passageways. The fuel for the engine, passes into the fuel pickup tube and out to the engine).

The excess fuel not needed by the engine is released through the pressure regulator to combine with the air/vapor and foam as it returns to the fuel tank. The regulator controls the fuel pressure to the engine.

AirDog® Benefits

The AirDog® Fuel Preporator® removes various contaminates, including entrained air/vapor, particulates and moisture, and removes excess fuel not needed by engines, allowing the fuel to flow through the regulator and return to the fuel tank. The separated air/vapor enters the return port after the regulator, allowing pure fuel to flow to the engine at a regulated positive pressure. A gerotor pump offers quiet, long lasting performance. Some benefits include:

•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


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!