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Description
Airdog II-5G 100 GPH Air Fuel Separation Lift Pump 98.5-04.5 Dodge 5.9L Cummins W/In-Tank PumpThe 98. 5 2002 Cummins got a pretty bad rap over the years for failed VP44 injection pumps, many claiming it was one of the worst decisions ever made to mate this supposed failure prone pump on a Cummins powered Ram. Now, was it really the VP44's fault, or was the engine bay mounted lift pump really the culprit? In most cases, the failure of the low output lift pump causes the demise of the injection pump. And to make matters worse, they continued to
The 98.5-2002 Cummins got a pretty bad rap over the years for failed VP44 injection pumps, many claiming it was one of the worst decisions ever made to mate this supposed failure prone pump on a Cummins powered Ram. Now, was it really the VP44's fault, or was the engine bay mounted lift pump really the culprit? In most cases, the failure of the low output lift pump causes the demise of the injection pump. And to make matters worse, they continued to use a similar lift pump placement all the way through the 2004.5 model years before going to a higher output in-tank lift pump. So how do you really fix one of these trucks for good? Easy, ditch the in tank stock lift pump and upgrade to an AirDog!
The AirDog II-5G is an all in one premium fuel pump and filtration system for your 1998.5-2004.5 Cummins diesel. This system removes water, particulates, and entrained air from the diesel fuel. The entrained air that is separated from the fuel is returned to the tank through a small return fitting. The fuel is delivered to the engine at the correct pressure and flow rate to meet the demands of the engine under all operating conditions.
The AirDogII-5G DF-100 systems feature a built in adjustable diaphragm pressure regulator. All AirDog II-5G systems include a complete installation kit. The AirDog II-5G, for this particular application, is preset at 17 psi from the factory for a stock application. The regulator is adjustable up to 55 PSI so you can fine tune the system to perfectly match up to your current and future performance upgrades.
HOW IT WORKS:
The AirDog II-5G DF-100 draws fuel from the fuel tank through a 1/2” suction line to reduce the risk of cavitation at the pump. The fuel is then drawn through the water separator where 92% of water is removed per SAE spec 1488. It is then pressurized through a Gearotor pump and sent to the 2 micron fuel filter before it is sent to the injection pump. The air from aerated fuel, due to tank sloshing and engine return lines, is separated and sent back to the tank through the 3/8” return fitting. The excess fuel that the engine does not use is recirculated through the diaphragm regulator back to the suction side of the pump.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.
Shipping Notes
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- 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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4.0 ★★★★★
Based on 1510 reviews
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Product Reviews
★★★★★ 5
Soft, Complete Set & Great Value
Color: 01 - Grey, Size: California King, Color: 01 - Grey, Size: California King
I’m really impressed with this comforter set! The material is super soft and comfortable, and it feels great for all seasons, not too heavy but still cozy. I love that it comes with everything you need, which makes it a great value for the price. The gray color is exactly as pictured and gives a clean, modern look to the room. After washing, it held up well with no issues. Overall, a great quality set that I would definitely recommend!
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Holds up beautifully—even after lots of washes
Color: 02 - Olive Green, Size: Queen, Color: 02 - Olive Green, Size: Queen
This is a beautiful bed set and has held up incredibly well over time.
I’ve washed it dozens of times now and figured it was finally time to write a review because it still looks and feels great. No issues with quality, stitching, or softness—it’s held up flawlessly.
The material is soft, warm, and comfortable, and it really pulls the whole look together in our camper bedroom.
Definitely one of those sets that looks good and lasts.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
So comfortable and awesome price.
Color: 01 - Grey, Size: Queen, Color: 01 - Grey, Size: Queen
I really like this bed set. The comforter is soft to touch and is comfortable. It’s weird and funny to say, but my cat really loves it too. The quality is very good! I got it on sale for $30.00… a set that comes with a comforter, fitted sheet, top sheet, 2 regular pillow cases and 2 decorative pillow cases is a win for me. It arrived on time, and came packaged really well. The picture below is showing of how they came in a box from bedsure, the sheets/ pillow cases and comforter come separated in different clear vacuum sealed bags. There are directions on how to open the sealed bags, but I just cut the top of both bags open at the top, and you hear a “pooof” noise, the blanket raised up. I let it air out for a few hours and then put it on my bed and it looked amazing.
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Reviewed in the United States on May 16, 2026
★★★★★ 4
Beautiful Color & Texture – Instantly Upgraded My Bedroom
Color: 07 - Mineral Blue, Size: King, Color: 07 - Mineral Blue, Size: King
I absolutely love this comforter set. The color is rich and calming, and the textured detailing adds such a classy, elegant touch. It looks way more expensive than it actually is and completely transformed my bedroom.
The fabric feels soft and smooth, and it lays nicely on the bed without looking stiff. It gives that clean, polished hotel vibe but still feels cozy and comfortable.
My only small complaint is the size of the comforter. I wish it were a little bigger, especially for fuller coverage on the sides of the bed. If you like that oversized, draped look, you may want to size up if possible. Other than that, it’s perfect.
Overall, I’m very happy with this purchase and would definitely recommend it if you’re looking for something stylish and affordable.
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Reviewed in the United States on February 28, 2026
★★★★★ 5
King size comforter
Color: 11 - Black, Size: California King
I’ve had this black king-size comforter for some time now, and it remains one of my favorite purchases. The comforter is thick, incredibly warm, and ideal for winter. I love the scrunched, textured design, which gives it a modern, stylish look, and the deep black color adds a sleek, elegant touch. It also came with both a set of pillowcases and a fitted sheet, along with a standard flat sheet, offering great versatility. Even now, it adds both style and comfort to my bedroom, and I couldn’t be happier with its quality.
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Reviewed in the United States on May 22, 2026
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