SKU: 3117165638

Airdog 4G Air Fuel Separation System 100 GPH 98.5-04 Dodge 5.9L Cummins With In-Tank Pump

Sale price$336.60 Regular price$374.00
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Description

Airdog 4G Air Fuel Separation System 100 GPH 98.5-04 Dodge 5.9L Cummins With In-Tank 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, a very expensive repair. 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, a very expensive repair. 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 have the converted in-tank pumps and will deliver either 100 or 150 gallons per hour (GPH) of fuel, enough to support stock to 500+ rear wheel horsepower.

AirDog I-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 I-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.

IMPORTANT INFORMATION REGARDING IN-TANK FUEL PUMP:
This specific AirDog unit is designed for trucks featuring the in-tank 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.

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/tuner or larger(500hp+), you will want the 150. If you have any questions, give us a call

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: 3117165638

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John M. Anderson
Battle Creek, US
★★★★★ 5
Snazzy Shoes
Size: 11.5 Wide, Color: Truffle/Ivory
Look nice, comfortable, easy to slip on
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Reviewed in the United States on April 13, 2026
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Arash
West Palm Beach, US
★★★★★ 5
Nice comfortable shoes
Size: 8.5, Color: Iron Nubuck/Iron
Looks good. Comfortable shoe.
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Reviewed in the United States on May 29, 2026
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Jenna Tracy
Pawtucket, US
★★★★★ 5
Great product, great delivery!
Size: 10.5 Wide, Color: Navy Blazer/Ivory
Great shoe- saw them in Nordstrom and was pleased to see I could get them quickly on Amazon. Arrived quickly and were packaged well!
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Reviewed in the United States on May 20, 2026
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HD
Los Angeles, US
★★★★★ 5
Fit and comfort
Size: 12, Color: Ch British Tan/Ivory
These have to rate as equal to any shoes I've ever owned. I know everyone's foot is shaped differently but when I slipped my feet into these I was immediately sure I had made the correct choice. Sizing is true. You note, I'm sure, that these are slip-on shoes. My experience with slip-ons has been mixed as sometimes the heel tends to slip due to the maker leaving room for the slip-on function to take place. When I got these I discovered that the opening for my feet was so tight I needed to shoe-horn them in and it wasn't particularly easy. The heel counter was "high and tight" but once I got my feet in the shoes it was heaven. Then, after a couple of days wearing them I can now slip my feet into these slip-ons with ease and the shoes grip my feet like a lace-up shoe can do. I have one other pair of Cole Haans in the same size 12. They are also a wonderful fit for me. I highly recommend.
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Reviewed in the United States on April 8, 2025
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Juan
Waukegan, US
★★★★★ 4
Great shoes true to size
Size: 11, Color: Ivory/Microchip/Ivory, Size: 11, Color: Ivory/Microchip/Ivory
Great shoes, came with box. Brand new, true to size 11 US ! :) in my country they cost 270 USD so, really nice and very comfortable shoe considering i have plantar fasciitis. 3 month update: They get wrinkles pretty fast in just a few weeks due to the material, it’s not noticeable to others at all, but it’s worth keeping this in mind when buying this particular model.
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Reviewed in the United States on February 21, 2026

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