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Description
Airdog II-5G Air Fuel Separation Lift Pump System 94-98 Dodge 5.9L 12 Valve CumminsFrom the factory, 12 Valve Cummins have a mechanical lift pump that actually works pretty good at maintaining adequate fuel pressure to the P7100 injection pump at stock and slightly above stock power levels. That said, its almost TOO easy to add power to a 12 valve through pump and injector upgrades, which now tasks this stock pump, not allowing for the full power potential of the performance upgrades you're making. The AirDog II 5G is an all in one
From the factory, 12 Valve Cummins have a mechanical lift pump that actually works pretty good at maintaining adequate fuel pressure to the P7100 injection pump at stock and slightly above stock power levels. That said, its almost TOO easy to add power to a 12 valve through pump and injector upgrades, which now tasks this stock pump, not allowing for the full power potential of the performance upgrades you're making.
The AirDog II-5G is an all in one premium fuel pump and filtration
system for your 12 Valve 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 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 30
psi from factory for a stock application. The regulator is adjustible up
to 70 PSI for the 165 GPH unit and 55 PSI for the 220 GPH version 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 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 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
- We offer a 30-day return/exchange service after receiving.
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Product Reviews
★★★★★ 5
Wallet
Color: Brown (Trifold)
Excellent material and very durable, a very necessary gift for my husband, he loved it
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Reviewed in the United States on May 2, 2026
★★★★★ 5
great wallet
Color: Brown (Trifold)
bought this a few years ago and its lasted its well built has lots of spots for id and credit cards worth the momey
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Reviewed in the United States on January 19, 2026
★★★★★ 4
Nice wallet
Color: Brown (Trifold)
Very nice wallet good quality
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Reviewed in the United States on November 26, 2025
★★★★★ 5
Perfect Buy
Color: Brown (Rodeo)
My husband says this is the best wallet he’s ever had! I have got him a. Couple but he loves this one! Well made rfid and beautiful
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Reviewed in the United States on January 3, 2026
★★★★★ 5
Sturdy & we repurchase yearly for Hubby’s refresh
Color: Brown (Rodeo)
This is my hubbys tried and true wallet. He requests this same one every year as a refresh. He wears his 24/7 in his back pocket so it gets discolored but still holds its shape pretty well with a slight bend.
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Reviewed in the United States on March 26, 2026