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Description
Airdog II-5G 220 GPH Air Fuel Separation Lift Pump 98.5-04.5 Dodge 5.9L Cummins W/ In-Tank PumpThe 1998. 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 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
The 1998.5-2002 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 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 fix one of these trucks for good? Easy, ditch the block mounted/fuel filter mounted 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-220 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- 165 draws fuel from the fuel tank through a 1/2” suction line and the DF-220 draws fuel through a 5/8” 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.
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.
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Exchange/Return Notes
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4.3 ★★★★★
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Product Reviews
★★★★★ 5
Great Detox Body Wash
Been using this once a week for about a month and it works great. Skin feels detoxed after and stripped of the nasty oils but not over stripped like a lot of products out there. My skin remained soft and smooth after and felt truly cleaner and fresher. Like I mentioned I only use it once a week personally but I don't see where it would be a problem to use it more frequently if you want to. Its another great product from an already outstanding company !
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Reviewed in the United States on March 29, 2022
★★★★★ 4
Tree Tea Body Wash
It does its job of decreasing ringworm and body flake skin itch. I need to give more time to make it work. Patience is the key. It has strong scents of Tea Tree Oil. After rinsing them off for a couple of minutes, it gives a clean rubbery feeling to it. Make sure you moisturize your skin after the shower bath.
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Reviewed in the United States on August 18, 2022
★★★★★ 3
Stick caused breakout on face and neck
This is a wonderful product but be wary if needing it for face and neck. It immediately caused blocked pores where pores were smaller.
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Reviewed in the United States on January 28, 2024
★★★★★ 5
Results after one use!
I know different products work differently for each person. However, I really noticed a difference in lightening of my facial freckles in one use!
I am a pale redhead with tons of sunspots and freckles. I was not taught to use spf as a child and have tons of spots on arms, chest, and face. As I get older, they have really started to bother me and age me.
I tried the orange version of this soap years ago and really didn’t see any change. I was reluctant to try this white version, but it was affordable, so I did.
I could not believe my face after one use! Overall complexion was lighter and my biggest sun spots diminished. I kept noticing results each day after using.
My arms - which are just covered with freckles - I didn’t see much lightening improvement but I think I will over time. They are just really severe cases. But I can see it working on my face, so certainly my arms will follow.
Also, I know this sounds weird - but my elbows became soft and silky! Without lotion! I was amazed! My elbows have never felt that good! Even with scrubs and body oils. I looked like a freak petting my elbows all day. It must be the exfoliating and moisturizing properties of this. Magic.
I am sad because I had to stop using them temporarily but no fault of the product. I’ve been having SEVERE hormonal, post-pill acne. I have been hesitant to put this on my face now because I’m afraid it may make it worse. But..seeing some of these reviews maybe it may help heal it. It’s horrible anyway..why not try to reintroduce it? Hmm.
Anyway, try it! What have you got to lose? I am very very very impressed with this white version!!!
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Reviewed in the United States on October 24, 2021
★★★★★ 5
Fresh scent and works
Very clean scent. Lathers amd rinses well. Excellent head to toe.
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Reviewed in the United States on April 5, 2026
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