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AirDog II-5G A7SABD525 DF-165-5G Air/Fuel Separation System

★★★★★ ★★★★★ 3.7 (3 Reviews)

Vehicle Fitment:
1998.5-2004 Dodge 5.9L 24V Diesel (Moderate To Extreme) | See full application list below
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The AirDog II-5G A7SABD525 DF-165-5G Air/Fuel Separation System from XDP is a state-of-the-art fuel delivery system for your 1998.5-2004 Dodge 5.9L 24V Diesel (Moderate To Extreme).

The AirDog II-5G offers protection and performance like no other lift pump. Their patented air separation, along with a water separator, and fuel filter makes sure your expensive fuel injection system components get all the clean fuel they can handle. This also helps overcome any loss of power due to driving in higher altitudes with a factory fuel pump. This system improves engine performance by eliminating spray pattern disruption due to air entering the system. This allows the engine to keep its designed injection timing which allows a more complete burn of the fuel entering the cylinder. This increases overall engine efficiency across the power and torque range.

The wiring harness has been upgraded to 12-gauge from the battery all the way to the internal connections in the motor. A Metri-Pack 280 connector replaces the Deutch 2-pin connector which allows more current flow without creating excessive heat. To help keep the elements out, all other connectors in the harness utilize weather packs.

The AirDog II-5G is the first diesel Fuel Air Separation System to include an integrated diaphragm fuel pressure regulator. This regulator allows for more fuel pressure adjustability, offers better fuel flow at pressure, and can be boost compensated. This system features the same 4G motor technology that has proven itself to be a reliable, quiet operating system. It also retains the "Demand Flow" of the older AirDog II variants. Demand Flow means whatever fuel the injection system does not use gets recirculated back through the filter base.

  • Lifetime Limited Warranty
  • Integrated Diaphragm Fuel Pressure Regulator
  • 165 GPH Fuel Pump
  • 12-Gauge Wire Harness
  • Reduced Aeration From Low Flow Return
  • Increases Engine Efficiency
  • Demand Flow Design Recirculates Fuel Back Through The Filter Base
  • Better Fuel Flow At Pressure
  • Includes Wiring, Plumbing, & Installation Hardware
  • Reliable & Quiet 4G Motor Technology
  • Larger Ports Over Previous Pumps

Limited Lifetime
Shipping Restrictions Apply shipping restriction icon This product can not be shipped to these states/provinces: CA
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.


  • MPN A7SABD525
  • GTIN 813094015252
  • ID 127203
  • 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
  • Warranty Info Limited Lifetime
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Cross Reference # A6SABD425
  • Internal L3R6


★★★★★ ★★★★★
3.7/5 Stars out of 3 Reviews
Verified Buyer
Great Lift Pump #2280488
I've had this pump on for over a month and no issues, fuel pressure is steady no matter what I throw at it. Installation is simple especially if you install a sump at the same time. Keep your injection pump safe and put an Airdog on your truck!
Verified Buyer
Air Dog 165
Installed my Air Dog 165 fuel pump and went to prime the fuel pump lines to the injection pump, we turned on the ignition switch and nothing happened. The pump didn't work, checked for power and had 12vdc to relay. The install was fairly easy, instructions were easy. We double-checked every connection, double checked voltage readings at each connection, battery, fuse, relay, and pump. This is my 2nd install of Air Dog fuel pumps first time having any issues. We added an XDP sump to the fuel tank also and that install went together as expected with no issues and no leaks.
Verified Buyer
Simple and clean
Directions were clear and easy, when paired with any of the Sump kits this install really becomes a breeze. I did it on my 01’ in about 2.5 hrs and paired it with a Beans Diesel sump. Makes plumbing a ton easier because you don’t have to mess with the sending unit at all. Just pop a hole in the bottom of the tank, run supply to Airdog and Airdog return back to the other fitting on the sump.

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