AirDog 100 Air/Fuel Separation System "Quick Connect" Cummins

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Model Year:
1989-2012 Dodge 5.9L & 6.7L Cummins (stock to moderate engines)
AirDog by PureFlow
$5 Price Beat Guarantee

Reliability and Performance! Two powerful reasons to add an AirDog to your diesel pickup! The AirDog provides the proper pressure/flow of fuel to your diesel engine under virtually all operating conditions for PEAK EFFICIENCY with CONSISTENT and MAXIMUM POWER OUTPUT!


The compact AirDog provides the most effective technology designed specifically for diesel pickups to remove water, particulates, vapor and entrained air from diesel fuel. The AirDog replaces the Cummins factory lift pump and filter system, and enhances the fuel delivery to the Powerstroke and Duramax 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 the 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!

  • NEW Quick Connect / Dis-Connect Fittings - Drops Installation Time 30-45 Minutes!
  • Most Compact System Available for the Pickup Truck. Only 7” L x 3.2” W x 10” H
  • For Stock and Modified Engines!
  • High Efficiency, Long Life Gerotor Fuel Pump
  • Lower Cost Replacement Filters
  • 3 and 5 Micron AirDog Fuel Filters Available *Stratapore Inside
  • Relay Controlled Wiring Harness
  • Low Fuel Pressure Warning Light Available
  • Includes Wire Screen Water Separator

   The 'BEFORE' spray pattern picture, shows graphically the effect of air/vapor in delaying the pressure buildup

The 'AFTER' picture, with processed fuel from the Fuel Preporator®, represents how each and every spray pattern could and should be!

Application Guide:
1989-1993 (Preset @ 10-13psi) A4SPBD336
1994-1998 (Preset @ 25-30psi) A4SPBD000
1998.5-2004 24V w/o In-Tank Fuel Pump (Preset @ 15-17psi) A4SPBD001
1998.5-2004 24V with In-Tank Fuel Pump (Preset @ 15-17psi) A4SPBD353
2005-2012 (Preset @ 15-17psi) A4SPBD002

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

(32 Ratings, 10 Reviews) Average Rating:
advanced diesel & light truck (wellington ,co) 12/29/2012 4:19 PM
Ive installed these with GREAT RESULTS!!! when properly installed & unmodified they work awesome!! never losted a pump or a customer.... great product... diesel mike
Not Impressed
Randy (Oxnard, CA) 7/16/2012 10:53 PM
The pump works fine now that its in and I rewired the wiring harness and fabricated a draw straw for the fuel tank. The instruction showed that the suction tube would work fine with the factory draw straw but it didn't allow nearly enough fuel to the pump. Also, the wiring harness had connectors in the wrong places so I had to do a lot of cutting and splicing. After all this it seems to work alright.
Drilling Consultant
Danny Bartran (Mississippi) 9/21/2011 12:13 PM
I have a 2000 1 ton w/ auto - strickly a farm / work truck. My concern was burning up an injector pump as Dodge still don't get it that their lift pump is crap. Also about the gain in fuel milage promised yet has to happen. I followed the instructions that came with pump as my truck had a in tank lift pump. My truck kept running out of fuel just below 1/2 tank and the two times it did it I was towing my backhoe. So in anticipation of needing it I dropped the tank and installed the Fass stainless steel draw tube, removed the lift pump and cut the suction and return lines (OEM). Now the truck runs fine, no milage increase though. I guess in a real world enviroment you should get better milage as your fuel should be free of air. Like I said I don't drive enough to see a change in the milage but I do have more power and peace of mind that my pump will not burn up. I also installed the pressure warning light as it's cheap insurance. The only problem I have now is the tank gasket that goes between the OEM lift pump housing is leaking and that's my fault.
travis (PA) 4/17/2011 4:04 PM
i bought this pump for the increased MPG's and to save my pump that i just replaced. i always hear that the factory lift pump is crap, so i wanted more piece of mind. so far i have seen 0 increase in mileage. after 2 months the pump still works fine. my next hurdle is to install the fitch fuel catalyst because the air dogg came with new 1/2 fuel lines and the fitch thing has 3/8 lines with hydrolic threads wich is causeing a delemma to install. I was really hopeing for the increased fuel mileage but i still get 430 miles per 30 gals.
Great product! Immediate Difference!
Curtis (Bedford TX) 12/10/2010 6:05 PM
I have the early 2004 2500 Dodge 4X4. This is a Great product and easy install (I did not have the intank pump though and as such did not have to drop the fuel tanks). At first startup, I noticed my engine was quieter and smoother sounding (as I remembered it when it was new). I took it for a spin and the throtle was tons more responsive. After driving it for a couple of weeks, I also noticed an increase in my mileage by about 2 to 3 miles per gallon.