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Description
Airdog II-5G 165 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-165 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-165 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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4.6 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 4
Not for heavy chewers!
Theme: Animals, Size: Medium
Didn't hold up well - but realized I didn't read that it was for "light chewers." Otherwise, cute design.
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Reviewed in the United States on January 28, 2026
★★★★★ 5
Soccer ball just for dogs
Size: 6 Inch Diameter, Color: Ocean Blue
I could say "soccer", and our shoodle would wag her tail ready to play soccer with a tennis ball so I tried out this real soccer ball with her. Mostly, she just wants to wait for me to kick it, playing defense, so she can chase it like the tennis ball. After that she wants to usually bite it or roll over on top of it as a way to secure the ball, but sometimes she will have fun pushing it around with her nose or paws. She still prefers the frisbee for play time outside since the frisbee is good for catching and for playing tug-o-war, but this is a good alternative that always gets her wagging with excitement.
I wanted to get a regular 6" soccer ball for our shoodle, but this was a good choice for dogs for the durability and safety of the rubber material. The hexagons give the dog some grip to pick it up. The rubber is soft enough to grip and expel air when they do figure out how to grip it. The ball is designed to suck back in air when the dog releases the ball.
- Durable rubber material ideal for dogs
- Dog can squeeze out air to grip it
- Ball fills back up with air after air is squeezed out
- Can make more noise than a leather soccer ball
- Noise is still tolerable when used indoors
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Good for aggressive cheers. Reinflates everytime even when punctured
Size: 6 Inch Diameter, Color: Apple Green
I have an aggressive cheer that will tear apart anything. I bought this a few months ago and it is covered in puncture holes but it reinflates everytime. Best dog toy ever she loves it. I would buy a dozen of these. The medium size is perfect for my mini bull terrier. Big enough to not get completely in her mouth but small enough that she can still grip it to carry it around
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Dog approved for fun, human approved for durability for the price.
Size: 8 Inch Diameter, Color: Orange
This has been my dogs favorite outdoor toy for years . I love these because they are durable and won't deflate when bitten or when carried around in their mouth.... no matter how many holes the dogs put in them. We leave these outside year round even in Minnesota winters. It is strong enough to hold up yet soft enough to be safe on their teeth. Now I do want to say although it is really durable it is not indescribable. IF you have a heavy chewer or a dog that loves to destroy toys, they would need supervision with this I think. My dogs don't try to chew this up but they do wear out over time. We replace it every 2 to 3 years on average. Definitely dog approved and recommended in my home, and human approved for cost and durability. I hope your dogs love it as much as mine do.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Best ball for dogs!
Size: 8 Inch Diameter, Color: Red
This is the best quality and long lasting ball for dogs. It's soft enough to kick and durable enough to where they can chew and chew and it will not lose It's shape. We play hardcore everyday for months and it holds up. Never have to worry about chunks falling off and peeling. Border Collie approved!! Also, $8 cheaper off amazon VS pet store or pet store website. You'll know when it has to be replaced once you have to manually re-inflate with your hands but thats after many many months.
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Reviewed in the United States on April 30, 2026