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AirDog II 4G 165 Fuel System 94-08
AirDog II 4G 165 Fuel System 94-08


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.

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. 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.

List Price: $776.00
Our Price: $739.00
You save $37.00!

Availability:: Usually Ships in 24 to 48 Hours
Part Number (P/N): DF1654G


Fuel Module Upgrades:
DrawStraw™ 1 QC for standard tank module 94-04 [Add $71.00]
DrawStraw™5 QC For in-tank pump units 05-Up & 98.5-04 Dealer retrofits [Add $72.99]
Universal draw tube, hole must be drilled in tank, does not fit into module [Add $29.99]
Modified Fuel Module 1/2" QC (FMDS 2P) with 1/2" QC return port for AirDog 150 and 200 [Add $330.00]
Modified Fuel Module 1/2" QC (FMDS) with 3/8 QC return port. AirDog 100, AirDog 165, Raptor [Add $295.00]

Fuel pressure access:
Fuel pressure access 1/2 push lock in line tee [Add $12.99]

Replacement Fuel Filters:
AirDog fuel filter (FF1002) [Add $23.00]
Donaldson replacement fuel filter (P551315) [Add $12.79]

Replacement Water Separators:
AirDog water separator (WS100) [Add $23.00]
Donaldson replacement water separator P550550) [Add $14.99]

Low Pressure Indicator:
Low fuel pressure warning light 901-04-0003-3 [Add $59.00]
VP44 Injection Pump 98.5-02 Dodge

Purchase with fuel system and save:
High output engines only. $500 core charge added to VP44 price at check out(44028) [Add $1,119.00]Core returned must be same as pump purchased.
Standard output engines $500.00 core charge added to VP44 price at check out (44027) [Add $1,119.00]Core returned must be same as pump purchased.

DF1654G   (28)

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