Pay in installments of $111.88 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 17 reviews
Sort
Product Reviews
★★★★★ 5
Nice burrow toy for small to med dog
Style: Popcorn Bucket
We like it! He loves to dig into stuff so this is a perfect addition to his other burrow toys. The most compact and only one hole makes it somewhat challenging for him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
a fun toy!
Style: Popcorn Bucket
My dog absolutely loves this toy! I have to repeatedly stuff the pieces back inside so he can pull them out. That being said, if you have a heavy chewer this one will bite the dust pretty quick. It’s cute but not sturdy for chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
★★★★★ 5
Perfect for keeping energetic pups busy, mentally stimulated, and happy!
Style: Milk & Cookies
I bought this interactive dog toy to keep my puppy mentally stimulated and it has been a huge hit! At first i was worried she wouldn't understand the concept but once i started squeaking the cookies inside the milk container she couldn't stop poking around until she was able to get all three cookies out. Trying to get the cookies out keeps her entertained but even after she gets them out she loves running around chewing and squeaking on the cookies. The milk container has holes just big enough to make her work a little but not get too frustrated, and the cookies are durable enough for her to keep chewing on without chewing right through them and without her hurting herself on them. Plus cleanup is easy too they wash quickly in warm water. Since the cookies are pretty small they can easily get lost under couches or beds.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2025
★★★★★ 5
My Cattle dog mix loves these!
Style: Popcorn Bucket
For a hyperactive super smart dog, this popcorn puzzle is a great treat! This is her second and she still plays with her first. I'm going to go ahead and probably buy her some other versions of puzzle toys. This is a good one. Buy it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 4
Needs to sell replacement popcorns
Style: Popcorn Bucket
My dog love this toy however, we have 5 popcorn buckets and only two popcorn balls left. It would be great if there was way to just buy the replacement popcorns. I haven't found them anywhere though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025