5,000-lb Capacity. Designed to upgrade your rear suspension, LoadLifter 5000 air springs provide high-quality, full-time load support. They level your vehicle, improving braking and ride comfort and reducing the strain on your factory suspension. Great Prices for the best vehicle suspension from Air Lift. Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle part number AL57391 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Air Lift Vehicle Suspension
- AL57391
Highlights
Custom Fit for Your Vehicle: Mounts to existing attachment points
5,000-lb Load Support: Levels your truck under heavy loads for safer towing and hauling.
Better Steering and Braking: Prevents rear sag so handling stays smooth and headlights aim right.
Adjustable Air Pressure (5–100 psi): Fine-tune ride comfort and load leveling for each trip.
Reduces Sway and Bounce: Absorbs road shock to keep your ride stable and controlled.
Durable 2-Ply Rubber Design: Reinforced air springs with corrosion-proof Zytel endcaps last longer.
Features to know about
Stay Level and Confident Under Load: Up to 5,000 lbs of Rear Suspension Support
When you hitch up a trailer or stack the bed full of gear, the last thing you want is rear-end sag throwing off your handling. The Air Lift LoadLifter 5000 air springs add up to 5,000 lbs of load-leveling support to your rear suspension. By carrying part of that weight, they keep your vehicle level for better steering, braking, and headlight aim. You avoid squat, sway, and bottoming out while keeping your tires wearing evenly mile after mile.
Fine-Tune Ride Height and Comfort: Adjustable Air Pressure from 5 psi to 100 psi
No two loads are the same, and these air springs let you dial in support as needed. Inflate both evenly to level front to rear, or inflate each bag separately to balance off-center loads. You can run as low as 5 psi when unloaded for a softer ride or go up to 100 psi for maximum support when the bed or hitch is packed heavy. Manual inflation valves and air lines are included so you can easily adjust pressure with a simple air source or optional onboard compressor system.
Built Tough for Real Work: Reinforced Rubber and Corrosion-Proof End Caps
Hauling heavy loads means everything under your truck takes a beating, so durability matters. Each LoadLifter 5000 air spring uses 2-ply, fabric-reinforced rubber with exclusive upper and lower roll plates that boost load capacity and protect against damage. The high-strength Zytel nylon endcaps are lighter and more corrosion resistant than steel, so they won’t rust out over time. That combination gives you reliable performance through heat, rain, road grime, and heavy use without worrying about leaks or wear.
Straightforward Setup for DIY Installers: Complete Hardware Included
Adding serious suspension support doesn’t have to be complicated. The kit comes with mounting brackets, hardware, manual valves, and air lines ready for installation using common tools. Just mount the springs, route the lines where they’re easy to reach—often at the bumper—and inflate. Once installed, you can adjust air pressure anytime or upgrade later with an in-cab compressor system for even more convenience.
Specs
Weight and Capacity
Load-leveling capacity: up to 5,000 lbs
Pressure Range
Adjustable air pressure: 5 psi - 100 psi
Warranty
Lifetime warranty
60-Day satisfaction guarantee
Note
Service caution: When servicing your truck with Air Lift air springs installed, if the truck is lifted by the frame, the air must be let out of the springs. And if the rear of the truck is lifted during service, then it must be supported by jack stands to avoid damage to the air springs.
57391 Air Lift LoadLifter 5000 Air Bag Suspension Support System - Back Axle
5,000-lb Capacity. Designed to upgrade your rear suspension, LoadLifter 5000 air springs provide high-quality, full-time load support. They level your vehicle, improving braking and ride comfort and reducing the strain on your factory suspension.
by: Matthew01/23/2026
I didn’t do the install myself. However my mechanic talked me into these after adding a rack and rooftop tent to my ‘14 Tacoma. Absolutely Fantastic. I have a 3” suspension lift and the truck handles as near to stock as I can remember. Awesome product. Easy install (according to mechanic). Thanks all. Oh yes, one issue because I added a leaf spring when I lifted it. He had to find new shackles to allow for fit. FYI3480715
Took my time and followed included instructions exactly. Went together well! Haven’t towed with them yet, but definitely raised the back of my Tacoma with 26 lbs of air pressure that I tested for leaks with! Feel like they’ll be a big improvement when towing our 4200 lbs. camper!3360047
Very easy step by step instructions, how to install.It took me about two hours in my driveway. I got it because I haul a 35' travel trailer. Makes the ride a whole lot smoother3588171
Watched the install video twice before the shipment got here and had no problems installing it. Also installed the WirelessOne from Airlift at the same time. Picked up some 1/4" clamps to make the air lines look a little cleaner, and hold them in place during our snowy and icy winters. Including the WirelessOne system, it took about 8 hours from the time I washed the underside of the truck until I rolled it back out from the garage. Pulled the camper this morning and all my old issues have disappeared. Truck is level, trailer pulls great, and the cooling system is back to working as needed. Highly recommend this suspension kit!3378462
These were a great addition to my truck. I moved from Washington to Michigan 1 year ago. Heavily loaded trailer and truck. No sag, no issues. Full disclosure I had to get some custom U bolts made because of my setup, but I have had zero issues. Great buy.
I plumbed my airlines through the license plate which turned out to be very handy.3625726
Im very impressed with these airbags. So far they are doing the job. These come with all hardware and instructions. I put 20 psi with no load to see how long the air would hold up. 2 weeks later im now at 15 psi which I'm satisfied. The previous bags of another brand didnt hold air well even with no leaks. I can tell the difference in ride quality. I've loaded the bed with landscaping materials and towed my boat with 15 psi and still holding strong. Looking forward to towing my Travel Trailer. Customer service has also been great!3332678
Everything arrived in good shape and all the parts came in.I got the flu so I have to wait until later.To get it all assembled, so for so good.....Thank you!3450494
by: Larry V08/19/2020
Installed as documented. Took a little longer on my truck as I have the rear stabilizer bar, but fit perfectly. I tow a 34 ft fifth wheel and running only 10 pounds of air was all needed to level rear. I used these air lifts on my previous pickup for the same reason and they worked great.864998
Larry V.
8/20/2021
works great
by: Lyle08/05/2025
Easy to install took three hours to install. Only issue was that the wrong carriage bolts that attach to the axel were the wrong length. 8” was sent, 10” is what it was supposed to be. Make sure you specify four wheel drive if that is what you need.3384452
So the issue you are having with squat on your 2019 Ford F-250 Super Duty will actually not be resolved with either of the SuperSprings suspension kits you mentioned. Those will help to a point, but they aren't going to resolve squat because they are going to flex with weight on them so your truck is still going to squat.
To prevent squat the best suspension enhancement option for your 2019 F-250 is going to be air bags. The reason is because they allow you to fill the air bags to whatever... view full answer...
Hey Bob,
We can get your 2022 Ford F-250 Tremor set up with Air Lift air bags, and the correct part is going to depend on if you have 2WD or 4WD:
- 2WD: Air Lift LoadLifter 5000 Air Helper Springs # AL57391
- 4WD: Air Lift LoadLifter 5000 Air Helper Springs # AL23FJ
Both are going to be compatible with 5th wheel/gooseneck hitches as well. view full answer...
Hi William!
We do call out if a kit will fit a dually or not, we just do it a little differently than Air Lift does (see included image). That said, the Air Lift LoadLifter 7500 XL Ultimate Air Helper Springs - Rear Axle # AL89DQ you asked your question from is not going to fit your 2026 F-350 Dually, but we definitely have options that will. For that, check out the following two parts:
Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL73DQ
Air Lift LoadLifter 7500 XL Ultimate... view full answer...
The towing capacity of your 2019 Ford F-250 Crew Cab Powerstroke with the 6-3/4' bed will vary from 14,100-16,600 lbs depending on drive type, axle ratio, and gross combined weight rating. If you can provide me with this information I would be happy to provide you with an exact capacity. The axle ratio should be listed on a tag inside the glove box and the gross combined weight rating should be listed on a tag inside the driver door jamb but if not you can always call the dealer with your... view full answer...
Hey Jason, yes, the Air Lift LoadLifter 5000 # AL73DQ will fit your 2024 Ford F-350 Dually. I've also gone ahead and confirmed this with AirLift as well.
The only caveat is that this model fits 4WD trucks only, so if you have 2WD then you'd need the Air Lift LoadLifter 5000 Air Helper Springs # AL57391 instead. view full answer...
Hello Shannon, thanks for reaching out. An air bag kit would be ideal for this. Since you aren't towing or hauling full time air bags would allow you to level the van when you are loaded, then you can reduce the PSI when you are unloaded so the ride isn't too rough. When the back is sagging like that it lifts the front end up off the ground. The front is where you get your steering and braking.
We offer one kit for the 2014 E350, the Firestone # F2061. These are 5,000 lb rated air bags.... view full answer...
Hi Steve,
There isn't a specific method of calculation, but I can tell you, with the amount of squat you have, and how light your 5th wheel is, you'll want the 5,000 lb capacity Air Lift air bags. Those are actually the lightest option that fit your single rear wheel 2021 Ford F-350, and have more than enough capacity for the payload on the back of your truck while you're towing. You just want to find the right psi for the bags (so you'll have to do a bit of experimenting with the air... view full answer...
The Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57391 are a confirmed fit for your 2017 Ford F-250 truck. Due to the 4 inch lift, you will also want to add the Air Lift Lock-N-Lift Spacers for Lifted Vehicles - 4" Lift # AL52440. This combination will give you the air springs compatible with your lift and will give you the manual inflation option.
If you want to add the ability to adjust your air springs at any time, I recommend adding the gauge and compressor. The Air... view full answer...
Hello!
I see you have a 2024 Ford F-250 Super Duty in our fitguide system so I'm guessing that's the truck that you're referring to.
Air bag kits, like the Air Lift LoadLifter 5000 Air Helper Springs # AL57391 you're looking at, do an amazing job at helping to support the OEM suspension on your truck, but I'm not sure if I would say people normally install them to increase the standard ride quality.
We have some other parts that can definitely help, but I think the best way to go about... view full answer...
Hey Patrick! For this setup Air Lift will be the way to go. If you have a 2WD you need the # AL57391 and for the 4WD # AL79DQ. Then for an air compressor you can use the Air Lift Load Controller II Compressor System # AL25592.
This is a single path system with a manual gauge. It also has a sensor that automatically kicks on if your air pressure gets too low to protect the air bags. It isn't too fancy but it will do the job and keep you well within budget. If you would prefer a wireless... view full answer...
Hello Jacob, thanks for getting in touch. It sure will! The Reese Under-Bed Gooseneck Trailer Hitch # RP39FR will allow you to install an air bag kit, as long as your stick with the Air Lift brand air bags. Their brackets are designed specifically to be compatible with in-bed hitches like the Reese. The Firestone air bags on the other hand, would not be compatible.
For the 2019 Ford F-250, I recommend the # AL88399 for 4WD models, or the # AL57391 for 2WD models. I also recommend adding... view full answer...
If you have a lifted 2017 Ford F-250, you will need spacers with Air Lift airbags like the Air Lift LoadLifter 5000 Ultimate Plus Air Springs w/ Internal Bumpers # AL89399 (4-wheel drive) or the Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57391 (2-wheel drive).
I went ahead and attached a diagram of how you determine what spacers to use with your truck. You will need to measure the distance between the upper and lower brackets and subtract the height of the air spring you're... view full answer...
Firestone does not have a kit that will work with a B&W gooseneck trailer hitch in a 2018 Ford F-250. The upper brackets mount to the outside of the frame rails and would interfere with the gooseneck frame brackets. You could switch to Air Lift system # AL57399 for a 4x4 or # AL57391 for 2-wheel drive models because they mount to the bottoms of the frame rails. view full answer...
I recommend the Firestone Ride-Rite Air Helper Springs # F35FV for your 2022 Ford F-250. The reason I would choose the Firestone over the Air Lift you looked at is the superior construction and durability. Firestone uses 4 layers of reinforced rubber to ensure durability while Air Lift only uses 2-ply fabric reinforced rubber. The Firestone air bags also have a braided wire girdle to increase burst pressure. In addition to this, they feature a rolled crimp seal to keep the air bags anchored.
For... view full answer...
Though we do not carry the Hellwig product, from what I could find, the SuperSprings # SSA25 kit will install much the same way. As I wasn't 100% on that, I called over and spoke to one of the Techs at SuperSprings and they confirmed that it would have to be one system or the other, unfortunately. With the adjustability of the Air Lift Loadlifter 5000 # AL57391, I suggest staying with this system over the SuperSpings # SSA25 set it and forget it style system. view full answer...
For your 2022 Ford F-250 Air Lift makes a LoadLifter 5000 kit that fits with the in-bed hitch with the part # AL57391 but the part number you mentioned does not fit. This will do a great job providing additional suspension support when you are towing your gooseneck trailer to prevent any suspension sag. view full answer...
Since you're pulling a 5th wheel trailer, you'll want to go with a air helper spring system that's compatible with an in-bed hitch. The system you'll need will depend on if you have a 2WD or a 4WD truck.
The internal jounce bumper feature can be a neat feature to have in the event you have a catastrophic failure of one of the bags, but if that should happen the existing suspension would still provide the necessary support for the short term, so it's not something I'd consider absolutely... view full answer...
If the rear suspension on your 2020 Ford F-250 is lifted, there is a decent chance that some additional spacers will be needed when installing the Air Lift LoadLifter 5000 Air Helper Springs # AL57391 for 2WD or # AL57399 for 4WD.
The best way to determine what size space you need though is to actually measure the gap that will be left once the springs are installed. The actual distance a particular lift raises the suspension on your truck can vary (a "6 inch lift" doesn't necessarily... view full answer...
I sure can; the correct fit for air bags on your 2020 Ford F-350 Super Duty Tremor are going to depend on if it is 2WD, 4WD, and if you have single rear wheels or dual rear wheels. The options are as follows:
- 2-Wheel Drive - Single or Dual Rear Wheels: Air Lift LoadLifter 5000 Air Helper Springs # AL57391
- 4-Wheel Drive - Single Rear Wheels: Air Lift LoadLifter 5000 Air Helper Springs # AL23FJ
- 4-Wheel Drive - Dual Rear Wheels: Air Lift LoadLifter 5000 Air Helper Springs # AL76KV
During... view full answer...
For your 2019 Ford F350 whether it is 4WD or 2WD will make a difference. If you have the 2WD then I recommend the Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57391. If you have the 4WD I recommend # AL57399. These options are confirmed to fit your F350 and will adjust from 5 psi to 100 psi for your ride preference. These kits come with the manual inflation valves so you can adjust the springs.
If you want to have the ability to adjust air pressure at any time, then... view full answer...
The capacity of the air springs does not increase the capacity of your vehicle. It's just meant to compensate for the load to make it feel and handle as if you don't have a load in your 2018 Ford F-350 Super Duty.
The Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle # AL88399 (4WD) and the Air Lift LoadLifter 5000 Air Helper Springs - Rear Axle # AL57391 (2WD) both have a 5,000lb capacity and are compatible with an in-bed hitch. Both will help... view full answer...
We absolutely have Air Lift air bags and a wireless compressor that will work superbly for your 2021 Ford F-250 Super Duty. The correct fit for the air bags is simply going to depend on if you have a 4-wheel drive or 2-wheel drive:
- 4-Wheel Drive: Air Lift LoadLifter 5000 Air Helper Springs # AL23FJ
- 2-Wheel Drive: Air Lift LoadLifter 5000 Air Helper Springs # AL57391
These Air Lift air bags are going to greatly benefit your '21 F-250's suspension, helping keep it level, stabilized,... view full answer...
The correct airbag kit you need for your 2018 Ford F-250 in order to use a 5th wheel or gooseneck hitch is the Air Lift LoadLifter 5000 Air Helper Springs part # AL57391 for 2WD models or part # AL57399 for 4WD models. This will be the only option we have for you to install airbags on your truck with a 5th wheel or gooseneck hitch installed. The Firestone Ride-Rite Air Helper Springs part # F2597 that you referenced will not fit as they are designed for a 2011 - 2016 Ford F-250.
If you... view full answer...
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Larry V.
8/20/2021
works great