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Home > AirDog > AirDog II 4G > AirDog Dodge Cummins AirDog II 4G
AirDog Dodge Cummins AirDog II 4G
Dodge Cummins
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AirDog II 4G logo

AirDog Dodge Cummins AirDog II 4G

AirDog II-4G for Dodge Cummins

AirDog II-4G Removes Entrained Air/Vapor From Dodge Diesel Fuel Improving Engine Performance The next generation in the fuel delivery system.

The patented AirDog II-4G has been quality engineered to remove entrained air and water vapor from diesel fuel for your Dodge Cummins. The result is a compact, long lasting, efficient, and quiet fuel system made with superior quality.

Advancing the AirDog® Tradition with the 4th Generation Fuel System!

The AirDog® II-4G system improves engine performance by:

  • Maintaining Correct Injection Timing
  • Eliminating Spray Pattern Disruption
  • Allowing for a Full Power Stroke and Complete Burn

Benefits of the AirDog® II-4G:

  • Increased Fuel Economy
  • Increased Power Output
  • Increased Torque Output
  • Longer Injector Life
  • Improved Throttle Response
  • Reduced Exhaust Emissions
  • Optimized Engine Performance

AirDog® II-4G also overcomes loss of power for diesel engines operating at higher altitudes.

AirDog® II-4G Features

  • Dual Feed Gerotor Pump
  • Low amperage motor provides efficiency and endurance
  • Self-aligning motor requires less maintenance and reduces noise levels
  • Intermediate pump shaft seperates motor from fuel
  • Small & Compact: ONLY 7"L X 10"T X 3.2"W
AirDog® II-4G Installation Kit

All-Inclusive Installation Kit includes:

Relay Control Wiring Harness

Fuel Module Up-Grade (when required)

All Fuel Fittings Required

Mounting Hardware

1/2" Fuel Lines W/ OEM Style Quick Connect Fittings

AirDog® II-4G Bracket & Spacer

Plastic Ties

Installation Manual

AirDog® II-4G Fuel Air Separation System featuring Demand Flow Technology and Enhanced Features

AirDog® II-4G is designed to operate at flows and pressures beyond the maximum requirements of the engine. It receives fuel under vacuum from the fuel tank containing entrained air/vapor, particulate contaminates and unknown quantities of water.

The fuel passes through the water separator which removes the large particulate contaminates that could damage or jam the gear rotor fuel pump. The fuel, with only entrained air/vapor and tiny particulate contaminates remaining enters the fuel pump.

The fuel, now under positive pressure flow, enters the fuel filter. As the fuel passes through the filter media and the remaining particulate contaminates are caught and contained, the entrained air/vapor is also separated. Through the positive fuel air separation features of the patented AirDog® II-4G the separated air/vapor is discharged from the filter and back to the fuel tank through the Primary Air/Vapor Discharge Port.

The fuel passing through the filter media is now free of contaminates and power robbing air/vapor. At pressures and flows able to meet the needs of the engine, it exits the fuel filter through two passageways. First, the fuel for the engine passes into the fuel pickup tube and on to the engine. Then, the excess fuel not needed by the engine recycles internally through the pressure regulator back to the water separator.

Select Dodge Truck / System Below Order

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fuel tank sumps
items you may need
ff100-2 (2 micron fuel filter) ws-100 (water separator filter) no picture available ff100-2 (2 micron fuel filter) ff100-2 (2 micron fuel filter)
FF100-2 (2 Micron
Fuel Filter):
WS-100 (Water Separator Filter)(steel petcocks): Dodge Universal Fuel
Module Upgrade Kit
3rd Gen Dodge/Cummins Fuel Filter Delete: 4th Gen Dodge/Cummins Fuel Filter Delete:
ONLY: $23.00*
ONLY: $26.00*
ONLY: $99.99* **
ONLY: $79.25*
ONLY: $59.95*
pressure tee fuel module upgrade kit            
Pressure Tee Fuel Module Upgrade Kit      
ONLY: $9.99*
ONLY: $99.00*
* NOTE - Item does not ship for free
** NOTE - Will NOT work with the new quick connect systems
Our PN# MFG. PN# AirDog II 4G Dodge Cummins Applications
PFTA6SPBD338 A6SPBD338 AirDog II-4G A6SPBD338 DF-100-4G Air/Fuel Separation System
1989-1993 Dodge 5.9L Cummins (Stock To Moderate)
PFTA6SABD340 A6SABD340 DF-165-4G Air/Fuel Separation System
1989-1993 Dodge 5.9L Cummins (Moderate To Extreme)
PFTA6SPBD252 A6SPBD252 DF-100-4G Air/Fuel Separation System
1994-1998 Dodge 5.9L Cummins (Stock To Moderate)
PFTA6SABD424 A6SABD424 1994, 1995, 1996, 1997, 1998
Cummins DF-165-4G Preset@25-30psi
PFTA6SABD027 A6SABD027 AirDog II-4G A6SABD027 DF-200-4G Air/Fuel Separation System
1994-1998 Dodge 5.9L Cummins (Extreme Applications)
PFTA6SABD425 A6SABD425 1998.5, 1999, 2000, 2001, 2002, 2003, 2004
Cummins DF-165-4G Preset@15-17psi
PFTA6SPBD253 A6SPBD253 AirDog II 4G 1998.5-2004 Dodge Cummins 5.9L
WithOut In-Tank Fuel Pump
PFTA6SPBD354 A6SPBD354 AirDog II 4G 1998.5-2004 Dodge Cummins 5.9L
With In-Tank Fuel Pump
PFTA6SABD028 A6SABD028 AirDog II-4G A6SABD028 DF-200-4G Air/Fuel Separation System
1998.5-2004 Dodge 5.9L Cummins
PFTA6SPBD254 A6SPBD254 AirDog II-4G A6SPBD254 DF-100-4G Air/Fuel Separation System
2005-2017 Dodge 5.9L/6.7L Cummins (Stock To Moderate)
PFTA6SABD426 A6SABD426 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
Cummins DF-165-4G Preset@15-17psi
PFTA6SABD029 A6SABD029 AirDog II-4G A6SABD029 DF-200-4G Air/Fuel Separation System
2005-2017 Dodge 5.9L/6.7L Cummins
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