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USD 645
Part #: PTA4SPBD005

AirDog A4SPBD005 150GPH Air/Fuel Separation System

2005-2018 Dodge 5.9L/6.7L Cummins (Moderate To Extreme)
Part #: PTA4SPBD005
★★★★★ ★★★★★ 26 Reviews
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The PureFlow AirDog A4SPBD005 150GPH Air/Fuel Separation System for your 2005-2018 Dodge 5.9L & 6.7L Cummins provides the most effective technology designed specifically to remove water, particulates, vapor and entrained air from the diesel fuel in your truck. The AirDog is a lift pump and filtration 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 from 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 @ 15-17 PSI (Stock-800HP)
  • Removes Air & Water From Fuel 
  • Increased Horsepower & Torque 
  • Optimized Engine Performance 
  • Improved Throttle Response 
  • Increased Fuel Economy 
  • Lifetime Limited Express Warranty


  • MFG. Number A4SPBD005
  • Manufacturer Name AirDog by PureFlow
  • Shipping Weight 27.00 lb.
  • Shipping Length 19 in.
  • Shipping Width 13 in.
  • Shipping Height 7 in.
  • Fuel Type Diesel
  • EO Number D-595-3
  • UPC 813094015054
  • Warranty Yes
  • Warranty Info Limited Lifetime


★★★★★ ★★★★★
4.2/5 Stars out of 26 Reviews
02 1 ton
(gulfport) | October 12th, 2009
Fairly easy to install, and it sure is nice looking at my fuel pressure gauge (attitude monitor) and seeing 19-21 psi while im driving and she only gets down to 15-16 psi when i drop the hammer (with the juice all the way up) good insurance for the crappy stock lift pumps we all deal with.
Air Dog 150
(Louise, TX) | December 10th, 2009
It works great when installed properly, with no hard to start issues, Great product!!!
good product
(Ohio) | January 3rd, 2010
Just put it on my 01 with the edge, k&n, mbrp 6" and it made a huge difference. truck idels alot better relitivly quite and fairly easy to installl just make sure you get the adapter for the fuel pres if you have a gauge. and with my truck set at 5 on the edge i made a 800mi trip and i went from 16 to 22.6 mpg.
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Questions and Answers

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Most Popular Questions

What is the best AirDog pump for 2001 Dodge 2500 5.9L?
View Staff Answer 

AirDog and AirDog II 100 units are recommended for up to 500 horsepower.

AirDog 150 and AirDog II 165 units are recommended for up to 800 horsepower .

AirDog II 200 units are recommended for anything that exceeds 1000 horsepower.

How does it get the fuel from the tank?
View Staff Answer 
What is the difference between the Airdog II and the Airdog II-4G?
View Staff Answer 

Check out this informative video to understand and see the difference!