AirDog II-5G Lift Fuel Pump 220gph for 15-16 Silverado Sierra Diesel A7SABC515

Regular price $875.00

Why GM opted to not include a factory fuel lift pump on all of the early model Duramax's is still a mystery. This lack of consistent fuel pressure coupled with the switch from the proven CP3 to a CP4 injection pump beginning in model year 2011 has spelled disaster on these trucks, especially for those trying to increase the horsepower through performance programmers and/or larger displacement injectors. Even at stock power levels, this insufficient fuel pressure and volume equates to limited overall power, decreased fuel economy, and potentially harming the injection pump and injectors due to a lack of lubrication.
The AirDog II-5G is an all in one premium fuel pump and filtration system for your 2011-2016 LML Duramax diesel. This system removes water, particulates, and entrained air from the diesel fuel. The entrained air that is separated from the fuel is returned to the tank through a small return fitting. The fuel is delivered to the engine at the correct pressure and flow rate to meet the demands of the engine under all operating conditions.
The AirDogII-5G DF-220 systems feature a built in adjustible diaphragm pressure regulator. All AirDog II-5G systems include a complete installation kit. The AirDog II-5G, for this particular application, is preset at 8-10 psi from factory for a stock application. The regulator is adjustible up to 55 psi for fine tuning the system to perfectly match up to your current and future performance upgrades.
The AirDog II-5G DF-220 draws fuel from the fuel tank through a 5/8” suction line to reduce the risk of cavitation at the pump. The fuel is then drawn through the water separator where 92% of water is removed per SAE spec 1488. It is then pressurized through a Gerotor pump and sent to the 2 micron fuel filter before it is sent to the injection pump. The air from aerated fuel, due to tank sloshing and engine return lines, is separated and sent back to the tank through the 3/8” return fitting. The excess fuel that the engine does not use is recirculated through the diaphragm regulator back to the suction side of the pump.


  • MANUFACTURERAirDog | PureFlow Technologies
  • MPNA7SABC514 | A7SABC515
  • 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.
  • (1) AirDogII-5G DF-220
  • (1) AirDogII Mounting Bracket
  • (1) Mounting Hardware Kit
  • (1) Wiring Harness
  • (1) Bundle of Plastic Ties
  • (1) 14ft of Fuel Line
  • (1) 7ft of 5/8” Fuel Line
  • (1) 5/8” High Flow Suction Tube
  • (2) 1/2” Straight Hose Quick Connect End
  • (1) 11.8mm Straight Hose Quick Connect End
  • (1) 3/8” 90 Degree Hose Quick Connect Fitting
  • (1) Customer Service Oring Replacement Kit
  • (1) 1/2” Male J2004 Quick Connect x 3/4-16” UNF
  • (1) 3/8” Male J2004 Quick Connect x 7/16” UNF
  • (2) 3/4-16 ORB Male to -10 JIC Female Fitting
  • (2) -10 JIC Male to 5/8” Barb
  • (1) -10 JIC Male to -10 JIC Female 90 Degree Fitting
  • Supports 800+ horsepower (if you have less horsepower than this, consider an AirDog 100 or 165)
  • Flows 220 Gallons Per Hour
  • Preset at 8-10 PSI
  • Variable fuel pressure
  • 3/4-16 o-ring boss (-8) inlet and outlet ports
  • 7/16-20 ORB return port (-4)
  • 4 bearing design with intermediate shaft to reduce pump noise and increase reliability
  • Low flow fuel return to reduce aeration in the tank
  • Demand Flow: only feeds as much fuel as what the engine needs
  • Dual feed that feeds fuel to both sides of the Gerotor Pump to decrease cavitation