Recommended Air Bags for Dually and Single Rear Wheel 2021 Ford F-350s
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Question:
What is the difference between item number: AL55FJ and AL86KV for the airlift 7500s thank you
asked by: Matthew M
Expert Reply:
The Air Lift LoadLifter 7500 XL Air Helper Springs item # AL86KV are designed to work with dually F-350's only. They will not fit the Tremor models or single rear wheel trucks.
The Air Lift LoadLifter 7500 XL Air Helper Springs item # AL55FJ are designed for single rear wheel F-350's.
Both of these air bag kits are confirmed to fit the 2021 Ford F-350. These systems have a 7,500 lbs weight capacity and are compatible with in bed hitches.
I have linked a couple of installation videos below.
I also recommend adding the Firestone Air Command II item # F2219 to your truck. This dual path onboard compressor will allow you to adjust the PSI in your air bags individually from the comfort of your cab.

Product Page this Question was Asked From
Air Lift LoadLifter 7500 XL Ultimate Air Helper Springs - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Air Springs
- Extra Heavy Duty
- Rear Axle Suspension Enhancement
- Air Lift
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