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Description
Airdog II-5G 100 GPH Air Fuel Separation Lift Pump System 15-16 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 2015-2016 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-100 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-100 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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4.0 ★★★★★
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Product Reviews
★★★★★ 5
Sleek Design That Hides Cables Well
Color: White, Size: 3FT(13A), Color: White, Size: 3FT(13A)
This flat plug extension was super easy to set up and works exactly as expected. We mounted it on drywall using anchors (not included), but that wasn’t an issue since we already had some. The flat plug design is great for tight spaces, and it really helped clean up our bedside area by keeping cables neatly hidden and organized. Definitely a practical and space saving solution!
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Ticks all the boxes
Color: White, Size: 10FT, Color: White, Size: 10FT
This ticks all the boxes. Nice long sturdy cord, rotating plug, sockets far enough to accommodate multiple devices, plus usb-a and usb-c. And mountable! Excellent product
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Reviewed in the United States on May 26, 2026
★★★★★ 4
Solves the problem of the ground location.
Color: White, Size: 5FT
In the master bath a lot of things need power. It really helps to be able to rotate the plug head to leave room for other devices.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Fabulous idea!
Color: White, Size: 3FT(13A)
I needed to puppy proof my sewing room. It has 4 stations for various machines and ironing. Lots of cords including TV, dyson vacuum, and computer. I bought two sizes, For my house the shorter one works from the standard wall outlet to above desks, ets. That included a small curve for positioning. There are 4 outlets, surge protected and c and a. My only con is the size. It is a very thick size. For something on the wall I wanted it flatter. The cord is a flat cord, and it came with connectors to put on the wall to contain the cords. If it were flatter it would be perfect. It is a bit bulky. It sure is very functional for all my needs. I also bought one of the stick ones which I would not do again. Heavy and even bigger to contend with. They both work well, It would depend on your own needs for the cord size. But certainly a good idea and the price is even better.
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Reviewed in the United States on July 31, 2025
★★★★★ 5
Does the job well
Color: White, Size: 1.5FT(13A)
I needed this as my wall outlet wasn't located near enough to my needs. Since it does exactly what the listing describes so, from my point of view, it gets 5 stars. Price was good. Well made.
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Reviewed in the United States on April 5, 2026