The Pureflow AirDog II-5G 100 GPH A7SPBC259 lift pump fuel system, or Fuel Preporator, is a top upgrade for your 2001-2010 6.6L Duramax. The fuel system on the LB7 LLY LBZ and LMM Duramax is the heart of the vehicle’s performance and reliability. This low pressure (preset at 8-10 psi) Duramax fuel pump mounts to the inner frame rail using the supplied sandwich plate mounting system. This makes it almost hidden, and keeps it out of the way of rocks and debris. The pressure side of the 5G fuel pump connects to the injection pump feed line on the frame. The suction/fuel supply sides connect directly to the factory quick disconnect fittings and the air/vapor return is sent back to the tank through a filler neck tee making the install very straight forward. Due to the fact the LB7/LLY/LBZ/LMM Duramax does not have a factory lift pump, these trucks usually see the most benefit from an AirDog lift pump fuel system. (see How It Works).
The II-5G fuel pump features a fully adjustable (7-55psi) 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 seperately). The AirDog 2 5G also includes an updated 12 gauge wiring harness with Metri-Pack 280 connectors, which allows for higher current flow without creating excessive heat.