The Pureflow AirDog II 5G 165 GPH A7SABF592 lift pump, or Fuel Preporator, is a must have upgrade for your 1999-2003 7.3L Powerstroke. The fuel system on your 7.3L diesel truck is the heart of the vehicle’s performance and reliability. This high flow and high pressure lift pump is preset at 55-60psi right out of the box.  The II-5G features a fully adjustable (up to 70psi) integrated diaphragm pressure regulator.  This regulator offers more consistent fuel pressure and allows for higher flow rates at pressure.  It can also be boost compensated to battle any pressure drops under open throttle (boost compensation kits sold separately).


The II-5G DF-165 Powerstroke lift pump mounts to the inner frame rail using the supplied sandwich plate mounting system. The suction/fuel supply side hooks directly up to the factory lines on the frame rail. The pressure side line connects directly to the injection pump feed line and the air/vapor return is sent back to the tank through a filler neck return tee. This pump is designed to replace the factory high pressure pump.  You can download the full PDF Installation manual HERE for a more in depth look at the installation process and a full parts list.


This AirDog II 5G 165GPH Powerstroke lift pump is recommended for trucks that have a moderately upgraded fuel system (meaning stock to larger injectors and injection pump; will also support aggressive tuning). The 165GPH pump is designed for performance applications reaching up to 800 RWHP! Backed by a lifetime warranty.


The AirDog II-5G DF-165 for the 99-03 Powerstroke is engineered with the most proven, quiet and reliable motor technology on the market.  It also retains the “demand flow” capabilties of the previous AirDog II systems.  This means that is has a constant supply of clean, pure fuel available for your injector pump at all times.  Any fuel not used by the engine is simply recycled back to the tank, so it will never “over-fuel” your system (see How It Works).  The II-5G features larger 3/4-16 O-ring boss inlet and outlet ports.  A 7/16-20 (-4) low-flow return is used to prevent aeration in the fuel returned to the tank.  The II-5G A7SABF592 uses the same better-than-OEM fuel filter (FF100-2) and water separator (WS100) as the previous AirDog II models.  Pureflow AirDog products are manufactured in Shelbyville, Indiana by a team of skilled workers with unsurpassed attention to detail and using the most stringent quality assurance.

Benefits of the 5G Fuel System

  • Improved Throttle Response
  • Longer Injection System Life
  • Increased Power and Torque
  • Reduced Exhaust Emissions
  • Adjustable Diaphragm Fuel Pressure Regulator
  • Boost Compensation Capability
  • Quiet and Smooth Pump Operation

AirDog 5G offers features to make it more durable than any other brushed DC motor system on the market!

AirDog ® II-5G Installation for Most Any Skill Level

The installation of any AirDog/Raptor system has been designed with the customer in mind. They know not everyone has special tools or fabrication skills, so the installation was made as easy as possible with basic hand tools and the occasional power drill. The quick-connect fittings and fuel lines make this a true plug and go installation, reducing the overall installation time. The step-by-step manual outlines each process of the installation and is accompanied by visual guides to aid your progress.

All-Inclusive Installation Kit Includes:
  • Relay Control Wiring Harness
  • All required Fuel Fittings
  • All Require Fuel Lines
  • Mounting Brackets and Hardware
  • Installation Manual

Additional information

Weight 27 lbs
Dimensions 19 × 13 × 7 in


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