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USD 765
Part #: PTA6SABC409

AirDog II-4G A6SABC409 DF-165-4G Air/Fuel Separation System

2001-2010 GM 6.6L Duramax (Moderate To Extreme)
Part #: PTA6SABC409
★★★★★ ★★★★★ 4 Reviews
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The PureFlow AirDog II-4G A6SABC409 DF-165-4G Air/Fuel Separation System for your 2001-2010 GM 6.6L Duramax is the next generation in the fuel delivery system, resulting in a long lasting, efficient and quiet lift pump. The compact AirDog II-4G provides the most effective technology designed specifically for diesel pickups to remove water, particulates, vapor and entrained air from diesel fuel, all while increasing power and performance.

The design of the patented AirDog II-4G features many innovative improvements for increased pump performance, less noise and less maintenance. The AirDog II-4G utilizes an intermediate pump shaft that moves the electric motor away from the fuel. This eliminates any potential for wet motors due to a damaged or leaking seal. The motors self-aligning capability requires less maintenance and increases the systems endurance, resulting in a longer pump life. The low amperage motor also provides longer drivability and contributes to a significant reduction in noise. 

AirDog® is proud to announce that the AirDog II-4G® is the quietest fuel system in the diesel market! 

  • Preset @ 8 PSI 
  • Supports 500HP-800HP 
  • Flows 165 Gallons Per Hour 
  • Improved Throttle Response 
  • Smoother Idle & Acceleration


  • MFG. Number A6SABC409
  • 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 813094019090
  • Warranty Yes
  • Warranty Info Limited Lifetime


★★★★★ ★★★★★
5.0/5 Stars out of 4 Reviews
Verified Buyer
AirDog 4G 165GPM
(Oneonta, NY) | April 26th, 2020
Great product. Easy to install come with everything needed. Unit is nice and Quiet when running. And as always XDP Great customer service reasonable prices. And Fast shipping. Order Number. 1126450
Amazing Customer Service!
(NC) | January 9th, 2020
So as everyone else has stated super easy install! I installed my pump October of 2018 in January of 2020 the pump died on me. The electric motor stopped operating even when it was receiving 12.4 volts of power. I to start I never registered the pump for the limited lifetime warranty. I called airdogs warranty line got an actual person first time all they asked for was the serial number. I explained what was going on with the pump and before I could finish the rep says he is sending me a new pump! No cost to me. I have never had this good of customer srevice in my life and will reccomend airdog to everyone I know!
Verified Buyer
A MUST!! ORDER # 1607224A
(GA) | August 18th, 2019
Great product and very easy installation. Hardest part was removing the factory fuel line, but with a little work it pops right off. Very little audible noise from the point and you forget it’s there. Highly recommend the fuel filter delete with this product. Very satisfied customer! Thanks XDP for the excellent recommendation.
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Questions and Answers

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Most Popular Questions

Is there a pressure regulator available for this pump? AirdogII-4G
View Staff Answer 
The AirDog® II-4G systems do not offer an adjustable regulator.
It will run, but most argue that is not a "flow through" design.
Can I run the AirdogII-4G on a stock setup?
View Staff Answer 
No it will not hurt the truck, but it could cause you headaches down the road. Running too much fuel to an injection pump that can't handle it can cause an increase in fuel pressure, which on some trucks could cause damage to that injection pump and possibly cause it to fail. Running a pump to fit your horsepower is suggested and will help keep you away from small potential issues.
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  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
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