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USD 645
Part #: PTA4SPBD002

AirDog A4SPBD002 100GPH Air/Fuel Separation System

Vehicle Fitment:
2005-2018 Dodge 5.9L/6.7L Diesel (Stock to Moderate) | See full application list below
Part #: PTA4SPBD002
★★★★★ ★★★★★ 11 Reviews
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The PureFlow AirDog A4SPBD002 100GPH Air/Fuel Separation System 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.  

  • 100 GPH @ 15-17 PSI (Stock-500HP)
  • Removes Air & Water From Fuel 
  • Increased Horsepower & Torque 
  • Optimized Engine Performance 
  • Improved Throttle Response 
  • Increased Fuel Economy 
  • Lifetime Limited Express Warranty

Disclaimer: XDP is in no way affiliated with Cummins or any of its subsidiaries or related companies, and that Cummins has not authorized the sale of any of XDP's parts, and has not tested or approved any of XDP’s parts for use in genuine Cummins brand products.

Vehicle Fitment

2005 Dodge 5.9L 24V Cummins
2006 Dodge 5.9L 24V Cummins
2007 Dodge 5.9L 24V Cummins
2007.5 Dodge 6.7L 24V Cummins
2008 Dodge 6.7L 24V Cummins
2009 Dodge 6.7L 24V Cummins
2010 Ram 6.7L 24V Cummins
2010 Dodge 6.7L 24V Cummins
2011 Ram 6.7L 24V Cummins
2011 Dodge 6.7L 24V Cummins
2012 Ram 6.7L 24V Cummins
2012 Dodge 6.7L 24V Cummins
2013 Ram 6.7L 24V Cummins
2013 Dodge 6.7L 24V Cummins
2014 Ram 6.7L 24V Cummins
2014 Dodge 6.7L 24V Cummins
2015 Ram 6.7L 24V Cummins
2015 Dodge 6.7L 24V Cummins
2016 Ram 6.7L 24V Cummins
2016 Dodge 6.7L 24V Cummins
2017 Ram 6.7L 24V Cummins
2017 Dodge 6.7L 24V Cummins
2018 Ram 6.7L 24V Cummins
2018 Dodge 6.7L 24V Cummins


  • MFG. Number A4SPBD002
  • 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
  • E-Code 2
  • EO Number d-595-5
  • UPC 813094015023
  • Warranty Info Limited Lifetime
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Internal L0R0


★★★★★ ★★★★★
4.2/5 Stars out of 11 Reviews
Worth It
Installed this on my 2006 5.9 right before towing my 11,000 lb fifth wheel with a sump kit. I have to say this was the perfect part to protect the injectors and CP3 Pump I had replaced. The stock lift pump is subpar and this Airdog was the perfect alternative. Installing this with a sump allowed me to not drop the tank or lift the bed and the install was moderately simple.
This thing is worth every penny! It gave me a huge increase in power & actually allows me to run my edge tuner at levels 4 & 5. Previous to this pump the high power tuner levels made no differance in power, but now she throws you back in the seat! I'll probably be shopping for a new clutch here soon. I actually did get an increase in econimy out of it as well (when I'm not romping on it). My idle is rock solid when it used to fluctuate up & down. During extended low speed driving while scouting / road hunting in the mountains I got an honest 2 to 3 mpg increase! Pretty easy to install except for the fuel tank pickup tube. Rather difficult to remove & re-install the 34 gal tank by yourself on my 05 2500 but it can be done. Great product!!
Great product!
very compact and fits well on my 2002 dodge. Engine starts up exremely smooth and runs smoother as well. With a comp and 150 injectors, it definatly makes a difference. Only problem was that the wrong fuel tank inlet was sent, and I had to manufacture my own. other than that... excellent product, definatly recomend it if willing to spend the money.
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Questions and Answers

Does this replace the stock lift pump either engine compartment mounted or in-tank (2004 Dodge 5.9) I want a system to replace the stock lift pump and filter system
View Staff Answer 

Yes, your stock lift pump and fuel filter will be replaced regardless of you stock lift pump location.

Is this a good apliction to replace the factory lift pump? Where does this unit mount and is this a complete kit with fittings?
View Staff Answer 

The PureFlow AirDog 100 Air/Fuel Separation System is a great replacement of your factory lift pump. The pump is mounted to your frame rail with the supplied mounting hardware and ships complete with a full installation kit. For more information, give our Diesel Experts a call at 1-888-DIESEL4!

Can I remove my stock fuel filter or should I leave it in?
View Staff Answer 

You stock fuel filter can be left as a secondary filter or removed completely.

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