AirDog A4SPBC088 150GPH Air/Fuel Separation System

2001-2010 GM 6.6L Duramax (Moderate To Extreme)
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AirDog by PureFlow
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The PureFlow AirDog A4SPBC088 150GPH Air/Fuel Separation System for your 2001-2010 GM 6.6L Duramax provides the most effective technology designed specifically for diesel pickups to remove water, particulates, vapor and entrained air from diesel fuel. The AirDog is lift pump and filter system, that enhances the fuel delivery to your engine with a commercial duty system.

Your High Performance diesel engine demands higher fuel flows. Yet higher fuel flows increase the vacuum at the fuel pump and agitation in the fuel tank. These factors generate additional air/vapor in the fuel system preventing your engine form producing maximum power and efficiency. Additionally, air/vapor can cause galling and pitting of the injector barrel/plunger assembly and also tip erosion. The AirDog eliminates air in the fuel that robs your engine of consistently greater performance and can also cause permanent damage to your injectors. The AirDog also provides the fuel pressures and flows your diesel engine needs to produce maximum power, any time, every time!

The Airdog works by pulling fuel from the fuel tank containing entrained air/vapor, particulate contaminates and unknown quantities of moisture. The fuel passes through the water separator which removes the water and large particulate contaminates. Then, the fuel with only entrained air/vapor and tiny particulate contaminates remaining, enters the fuel pump. Under positive pressure flow, the fuel passes through the fuel filter and the remaining particulate contaminates are caught and contained, the entrained air/vapor is also separated and returned to the tank. The clean fuel is now free of contaminants and water and flows at the proper pressures up to your engine. Each kit includes plumbing, hardware, wiring harness, mounting bracket and all components needed for installation.  


  • 150 GPH @ 8-10 PSI (Stock-800HP)
  • Removes Air & Water From Fuel 
  • Increased Horsepower & Torque 
  • Optimized Engine Performance 
  • Improved Throttle Response 
  • Increased Fuel Economy 
  • Lifetime Limited Express Warranty


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Customer Reviews - Include your order number for a chance to win a $100 GiftCard

(52 Ratings, 3 Reviews) Average Rating:
James (California) 6/3/2016 3:52 PM
I don't know what other people mean by this being worthless, ITS IS EASY TO INSTALL AND PERFORMS FLAWLESSLY! Its a LIFT PUMP and it takes the strain off your cp3 pump for increased longevity of a critical/expensive part. No it doesn't prevent smoking, it provides positive pressure to the engine/cp3 pump at all times with better filtration and water separation! Easy to install! Everything is included that you need. I would recommend this product to ANYONE with a diesel truck! Great product.
To Clayton who called it worthless.
Dustin (Diesel Addiction) 1/5/2010 1:26 PM
This system is a lift pump, in my opinion one of the best out there for the money. You are right it pressurizes the fuel system to make sure the CP3 has a constant supply of fuel. I have sold an installed dozens of these and they do they're job well from the stock Duramax's I have running mid 12s and dynoing over 550hp to my truck that runs 11.1s and dynos over 820hp.
Clayton (Pennsylvania) 8/28/2009 2:15 PM
if your planning to buy this thing expecting to yank the smoke then save your money. i put this pump on my 02 duramax and made no difference at all basically all it does is pressurize the stock fuel system so a lift pump would have been a lot easier and cheaper