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Description
Airdog II-5G 220 GPH Air Fuel Separation Lift Pump System 11-16 6.6L GM Duramax LMLWhy GM opted to not include a factory fuel lift pump on all of the early model Duramax's is still a mystery. This lack of consistent fuel pressure coupled with the switch from the proven CP3 to a CP4 injection pump beginning in model year 2011 has spelled disaster on these trucks, especially for those trying to increase the horsepower through performance programmers and or larger displacement injectors. Even at stock power levels, this insufficient
Why GM opted to not include a factory fuel lift pump on all of the
early model Duramax's is still a mystery. This lack of consistent fuel pressure coupled with the switch from the proven CP3 to a CP4 injection pump beginning in model year 2011 has spelled disaster on these trucks, especially for those trying to increase the horsepower through performance programmers and/or larger displacement injectors. Even at stock power levels, this insufficient fuel pressure and volume equates to limited overall power, decreased fuel economy, and potentially harming the
injection pump and injectors due to a lack of lubrication.
The
AirDog II-5G is an all in one premium fuel pump and filtration system
for your 2011-2016 LML Duramax 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 adjustible diaphragm pressure
regulator. All AirDog II-5G systems include a complete installation kit.
The AirDog II-5G, for this particular application, is preset at 8-10
psi from factory for a stock application. The regulator is adjustible up
to 55 psi for fine tuning the system to perfectly match up to your
current and future performance upgrades.
HOW IT WORKS:
The
AirDog II-5G DF-220 draws fuel from the fuel tank 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 Gerotor 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.
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Exchange/Return Notes
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4.2 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
100 % genuine sheepskin.
Color: Ivory, Size: 2' x 3' (Pelt)
Just received today. Beautiful sheepskin rug. 100 percent natural long fibers. As the listing states..."it has the wrong labei". That must be why the "experts" complained. Out of several rugs i own, this one is the nicest. Slight smell but airing it out will take care of that.
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Reviewed in the United States on September 3, 2025
★★★★★ 4
Overall good quality
Color: Ivory, Size: 2' x 3' (Pelt), Color: Ivory, Size: 2' x 3' (Pelt)
I was pleasantly surprised by the thickness of this rug. No bad smell coming off it. I like the leather backing on it. Wasn't as soft/fluffy straight out the bag but a quick brush fixed that issue for me. So far even with the brushing there is minimal shedding. Bought as a gift for my husband but my son enjoys it.
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Reviewed in the United States on March 9, 2023
★★★★★ 5
Soft and easy to comb and fluff again.
Color: Ivory, Size: 2' x 6' (Runner)
This sheep skin fit perfectly in front of DOG'S couch! It is the go to place to curl up or stretch out after tearing up the yard playing!
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Definitely genuine pelts.
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
I like the color. Not too white, more of a natural shade.
I ordered two, for each side of the bed. One is larger than the other which proves they are genuine pelts and I’m ok with it!!
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Great small size rug
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
Size is great, I wanted to use as a throw on a leather ottoman and it fit great. It isn’t exactly the color I expected but it is a neutral cream. Soft and comfortable. Well made.
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Reviewed in the United States on January 1, 2026