The Pureflow AirDog 150 GPH A4SPBD337 is the original proven Air/Fuel Separation Cummins lift pump or Fuel Preporator. A lift pump system is a must have for your 1989-1993 12V Cummins diesel. The fuel system on your diesel truck is the heart of the vehicle’s performance and reliability. This low pressure (10-13 psi) Cummins lift pump mounts to the inner frame rail using the supplied sandwich plate mounting system. The suction/fuel supply side connects to the supplied 1/2″ draw straw installed in the fuel tank.  The pressure side lines connects directly to the VE-44 bypassing the factory block mounted mechanical pump and fuel filter housing.


The AirDog FP-150 lift pump will solve the infamous P0087 & P1093 low fuel rail pressure codes. This positive supply of purified fuel being fed to your VE44 injection pump 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. (see How It Works)


This AirDog 150GPH is recommended for 12V trucks that have a stock to a mildly upgraded fuel system (meaning mild or stock injectors, VE44 injection pump and tuning). See How To Choose A Lift Pump. Backed by a lifetime warranty.



  • 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

AirDog® Installation Kit

All-Inclusive Installation Kit Includes:

  • Relay Control Wiring Harness
  • 1/2″ Suction Tube
  • All Fuel Fittings Required
  • Mounting Hardware
  • 1/2″ Fuel Lines W/ OEM Style Quick Connect Fittings
  • AirDog® Bracket & Spacer
  • Plastic Ties
  • Installation Manual

Additional information

Weight 22.4 lbs
Dimensions 19.5 × 13.5 × 8 in


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