SKU: 17597882876

Airdog 4G Air Fuel Separation System 98.5-04 Dodge 5.9L Cummins With Block Mounted Pump

Sale price$324.00 Regular price$360.00
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Description

Airdog 4G Air Fuel Separation System 98.5-04 Dodge 5.9L Cummins With Block Mounted PumpThe factory block mounted lift pumps found on the 1998. 5 2004. 5 Cummins have proven themselves as being nothing better than a temporary Band Aid. Further, as the lift pumps failed, it would cause premature failure of the injection pump especially in VP44 applications. While Dodge began retrofitting fuel pumps from the block to inside of the fuel tank, it has been shown that this conversion is better than the original units, but still not adequate,

The factory block mounted lift pumps found on the 1998.5-2004.5 Cummins have proven themselves as being nothing better than a temporary Band-Aid. Further, as the lift pumps failed, it would cause premature failure of the injection pump especially in VP44 applications. While Dodge began retrofitting fuel pumps from the block to inside of the fuel tank, it has been shown that this conversion is better than the original units, but still not adequate, especially for those that have made any performance upgrades whatsoever. This pump kit is designed for those trucks that are currently running the original style block mounted pumps and will deliver either 100 or 150 gallons per hour (GPH) of fuel, enough to support stock to 500+ rear wheel horsepower.

AirDog 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 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.

Unsure of whether you need the Airdog 100 or the Airdog 150? - Put it this way...if your truck is stock, or moderately stock(up to 500hp) you want the 100. If you've added a 100hp injectors or larger(500hp+), you will want the 150. If you have any questions, give us a call.

IMPORTANT INFORMATION REGARDING BLOCK MOUNTED FUEL PUMP:

This specific AirDog unit is designed for trucks featuring the original style block mounted lift pump. For those unaware, all of the 1998.5-2004.5 Cummins powered Rams came from the factory with a block mounted lift pump. However, if it ever failed and had it replaced previously, it very likely was retrofitted to the newer design that actually placed the pump in the fuel tank. If you're not sure where your pump is located, simply "bump" the key, which will engage the pump, then listen whether the hum from the pump is coming from the engine compartment or the fuel tank.
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 17597882876

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Babiche Design
Pawtucket, US
★★★★★ 3
stiff like cardboard tops of shoes
Size: 5.5, Color: Natural Nbpu
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Reviewed in the United States on January 15, 2025
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Pamela
Whiting, US
★★★★★ 5
Great for wide feet
Size: 9, Color: Black Nubuck
Beautiful- great for wide feet, camouflage slight swelling in feet / ankles beautifully. Look great with everything; adds a touch of elegance & rock star. Super fast shipping too!
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Reviewed in the United States on November 8, 2025
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Robin
Houston, US
★★★★★ 5
Sizing.
Size: 10, Color: Natural Nbpu
They run big, I usually wear a size 9 wide, but since they didn't come in a wide, I chose a 10 and they fit comfortably width wise, but they were too big otherwise. I would recommend letting viewers know if it is a wide shoe to let buyers know, to better serve the customer on what size to purchase, other than that, I loved the shoes just wish I could've kept them and worn them for my event.
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Reviewed in the United States on August 20, 2025
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Tamara
Birmingham, US
★★★★★ 1
Not worth the price
Size: Medium, Color: Dark Cappuccino
Item was gifted for Christmas. Within 3 weeks stitching was coming out of the straps.
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Reviewed in the United States on January 12, 2026
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Chasie
Chelsea, US
★★★★★ 5
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Reviewed in the United States on December 28, 2025

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