AirDog® II-4G 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!

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

• 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
  

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.