The Pureflow AirDog II-5G 165GPH A7SABF590 lift pump, or Fuel Preporator, is a must have upgrade for your 2017-2021 6.7L Powerstroke. The fuel system on your 6.7L diesel truck is the heart of the vehicle’s performance and reliability. This high pressure lift pump features a built in adjustable diaphragm pressure regulator. It comes preset at 50psi during idle to 70psi under load (9V – 13V). The II-5G was designed for seamless integration retaining the factory variable fuel pressure and factory wiring harness.
The II-5G kit for the 17-21 Powerstroke uses a bed bracket to be mounted inside the bed forward of the rear wheel. The fuel module is modified but does retain the factory venturi fill system. Part of the pressurized fuel is sent back to the modified fuel module allowing the venturi basket fill action to work as intended from the factory. This will ensure there will be no loss of fuel suction (1/4 tank issues) until the fuel tank is completely empty. The pump draws fuel from the modified fuel module and sends it to the factory frame rail feed line. The pressure line is tapped with a return “Y” to feed the venturi in the basket with pressurized fuel. The AirDog return is sent back through the modified fuel module. This kit is intended to replace the factory fuel pump. Download the full PDF installation manual HERE for an in depth look at the installation process and a full parts list.