bing tracking image
  1. Vehicle Suspension
  2. Air Lift
  3. Air Springs
  4. Rear Axle Suspension Enhancement
  5. Heavy Duty
Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle

Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle

Item # AL88391
Our Price: $556.12
Vehicle Suspension

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
5,000-lb Capacity. LoadLifter 5000 Ultimate air springs have internal bumpers, so you get the adjustable load support of air springs and the comfort and reliability of jounce springs. Jounces also work as a fail-safe if air springs lose pressure. Great Prices for the best vehicle suspension from Air Lift. Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle part number AL88391 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (901)
  • Q & A (0)
  • Photos

Air Lift Vehicle Suspension - AL88391

  • Air Springs
  • Rear Axle Suspension Enhancement
  • Air Lift
  • Heavy Duty

5,000-lb Capacity. LoadLifter 5000 Ultimate air springs have internal bumpers, so you get the adjustable load support of air springs and the comfort and reliability of jounce springs. Jounces also work as a fail-safe if air springs lose pressure.


  • Hybrid spring system combines the adjustability of air springs with the reliability of jounce-style springs
  • Air bags reduce the strain on your rear suspension, increase safety, and compensate for uneven loads
    • Level your vehicle front to back and help maintain safe headlight aim
    • Adjust independently for side-to-side leveling of off-center loads
    • Improve steering and braking performance
  • Jounce spring inside each air spring helps to improve ride comfort, reduce sway, and help with cornering
    • Engages at lower air pressures to better absorb road shock and minimize bottoming out
    • Provides support progressively - the more you load the springs, the stiffer they become
    • Lets you temporarily carry a load with zero air pressure in your springs
  • Quality construction for long-lasting spring life
    • 2-Ply, fabric-reinforced rubber air springs are durable
    • Air Lift's exclusive upper and lower roll plates protect air springs from damage, extending the life of the suspension system
    • High-strength Zytel nylon endcaps are lighter, stronger, and more corrosion resistant than steel
    • Urethane internal jounces require no maintenance and work well in hot or cold temperatures
  • Designed for heavy-duty applications such as 1/2-ton, 3/4-ton, and 1-ton pickup trucks, motor homes, and commercial trucks
  • Mounting brackets and hardware are included for installation
  • Manual inflation valves and air lines are included
    • Manual valves are typically mounted on bumper for easy access
    • Compressor system with in-cab gauges (sold separately) can be added to monitor and automatically adjust air pressure
  • Made in the USA


  • Load-leveling capacity: up to 5,000 lbs
    • LoadLifter 5000 Ultimate springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.
  • Adjustable air pressure: 5 psi - 100 psi
  • Lifetime warranty
  • 60-Day satisfaction guarantee

Note: 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.

Get the Best of Both Springs

The air springs and jounce springs in this system work together to give you the best ride whether your truck is loaded or unloaded. Air Lift's LoadLifter 5000 Ultimate air springs have internal urethane foam jounces that protect the air springs and provide added ride comfort when your air pressure is low. The jounces also allow you to temporarily carry a load if the air springs lose air pressure. This gives your 1/2-ton, 3/4-ton, or 1-ton pickup, motor home, or commercial truck air springs that are easier to maintain.

Air Springs Level Your Load

Carrying heavy cargo in your truck bed or trailer puts extra stress on your truck. Your brakes erode faster, your tires wear unevenly, and handling suffers severely. When towing, you might also experience excessive sway, bottoming out, and even inaccurate and unsafe headlight aim.

By pairing your existing suspension with LoadLifter 5000 Ultimate air springs, you can seriously beef up your suspension, ensure equal load distribution, and get the support you need. The springs provide up to 5,000 lbs of load-leveling capacity (depending on the weight-carrying capacity of your vehicle) and distribute the weight of your payload to all 4 wheels. As a result, the stress on your factory suspension is significantly reduced. LoadLifter's air bags are adjustable from 5 to 100 psi for precise support, and they can be inflated equally for front-to-back leveling or independently of one another for side-to-side leveling.

The air springs are made of high-quality, 2-ply, fabric-reinforced rubber. Most air bags lose air at the ends where the bag is enclosed with steel caps. These caps can rust and corrode over time, creating small holes. But the endcaps on Air Lift air bags are fashioned from corrosion-proof Zytel nylon, a material that is both stronger and lighter than steel, ensuring that the air bags won't lose air.

Roll plates on Air Lift 5000 Ultimate air spring

The air bags also have Air Lift's exclusive roll plates, which protect the air springs and beef up their load capacity. These sturdy plates help guard the springs from moving parts under your vehicle that might puncture the air bags. The plates also provide a larger surface area for each spring to roll on. The extra surface area gives you a higher spring rate at a lower air pressure, resulting in a better ride.

Built-In Jounce Springs Add Control and Comfort

Air Lift 5000 Ultimate air spring with jounce spring inside

The closed-cell urethane jounce spring inside each air spring gives you a more stable, comfortable ride. Each jounce acts as an overload spring and engages when your current air pressure level isn't enough to support your load. So on a rough road, the springs will kick in if needed to absorb bumps and shocks and help you to avoid bottoming out. When the jounces support a load, they adjust progressively - the more weight you pile on, the stiffer they become. The urethane material engages more smoothly than rubber jounces so you get a less jerky ride.

Because these jounces are taller than your factory jounce bumpers, they engage sooner than your factory jounces would to provide better support. And if the LoadLifter 5000 Ultimate air springs have insufficient or zero air pressure, the internal jounces will help to temporarily support your suspension and protect it from damage until you can repair or adjust the air spring system.

Easy Installation

This system installs with the included brackets and hardware. Just mount the springs, inflate them, and ride. To inflate the LoadLifter springs, you just have to pump in air through the inflation valves. A line kit is included with the springs so that you can install the manual inflation valves (one for each spring). These are typically mounted on the bumper but can be installed anywhere that is easily accessible. If you want to make the springs even easier to use, you can get a compressor and gauge system (sold separately) that allows you to monitor and adjust the springs from the cab of your truck.

Lifetime Warranty

Along with a lifetime warranty that has no mileage restrictions, Air Lift offers a 60-day satisfaction guarantee. Just install and use LoadLifter 5000 Ultimate springs for 60 days, and if you are not satisfied at the end of this time, you can remove and return them for a full refund.

88391 AirLift Load Lifter 5000 Ultimate Air Bags with Internal Jounce Bumpers - Back Axle

Installation Details AL88391 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle - AL88391

Average Customer Rating:  4.7 out of 5 stars   (901 Customer Reviews)

5,000-lb Capacity. LoadLifter 5000 Ultimate air springs have internal bumpers, so you get the adjustable load support of air springs and the comfort and reliability of jounce springs. Jounces also work as a fail-safe if air springs lose pressure.




I was able to install myself and after spending four months with our Lance 960 on board they are great. They are a great compliment to our 2022 ford F-350.


My wife and I did the install in 3hr 55min. We stopped a lot to double check our work and check the instructions. A couple minor things there. Tighten the large washer at the start. It's easier than trying to tighten it later. And the picture shows the washer is tight and against the edge of the lower strike plate but the instructions don't agree. We followed the picture.
We brought the schrader valve up to the fuel compartment. Used a few extra zip ties to help maintain the curves in the air line. Made a short run to our dump, almost 10 miles round trip. I'll inspect it tomorrow and retighten everything. In 4 days we'll take the camper for a short trip. A shake down of sort.


ordering was easy with prompt delivery.
was not bad at all with the good instructions.
Truck ride very nice, well worth the money I spent.

Would recommend to friends.


Installed on a 2024 GMC Sierra Crew SLT with rear poly mono springs. This worked great and the install was easy. It took me about 2.5 hours on a 4 post lift, but you could do it in the driveway if you needed to. I reached out to airlift to make sure it would work on a vehicle with mono-springs and they were not 100 percent sure if it would. So I took a chance and it worked flawlessly!


The product was as advertised. Instructions were provided and fairly straightforward. Be sure to jack the frame up high enough to access the area where the airbags go. Be careful when inserting the clips into the frame. I had one that slipped and shot into the inside of the frame and thankfully I had a long handled magnet and retrieved it. One recommendation I have is for the manufacturer to preassemble as much of the product as possible which would minimize the chance of parts being assembled incorrectly. I mounted the valve stems on the bumper on each side of the license plate.


The kit got here and it was in good shape and everything that was supposed to be there was there. Haven't tried it out yet but I have no doubt that it's going to work perfectly. The staff was very friendly and a very helpful in picking out the right system for my motorhome, I will add more photos when I get the project done plus a video.


Air Lift Loadlifter 5000 air helper springs have been a great addition for towing and hauling. Relatively easy to install and great operation. I use them weekly without problems.


Well designed and made, and maintains system pressure over several weeks period. Easy to adjust my enclosed auto trailer to level height when towing with my Tundra Hybrid. I recommend adding the braided stainless air lines.


This product was fairly easy to install. The biggest problem I faced was a suspension bracket on my passenger side next to wear I installed that airbag. It was not mentioned in the video instructions. I really struggled getting my tools and hands on such a tight spot. After an hour, everything was ready to roll.


I pull a 38 foot long camper with my Excursion. Lots of bounce and roll with a tongue weight of almost 1500lbs. After installing these air bags it locked in the rear axle and made the Excursion ride like it was a dually. No roll or sway and almost no more bounce.
Installation was straight forward and took me about 4 hours to do in the driveway with no specialized tools.


I have a 1992 Toyota Rv. The suspension and ride were terrible. I hoped that this kit would serve to level the rig, improve stability and hopefully cushion the ride. I was not disappointed. With the addition of new shocks, the ride was night and day. I am very pleased with this purchase.


This was installed on a 2021 Chevy Express 2500 van conversion by Explorer Conversion Vans. Explorer installed an Eaton rear suspension and it was not up to the task of a heavy conversion van. I think the air bags help but I will need to upgrade the shock absorbers to eliminate some of the bounce from the air bags. There were three primary issues with the installation:

1) The parking brake cable bracket is in the way and has to be cut off the axle. I attached the parking brake cable clamp to one of the Air Lift bolts using a nut. This is not something every at-home installer can do.
2) The air hose is barely long enough. I specifically asked how long the hose is because I wanted to route it where the future compressor will go and was told there is enough to go around the entire vehicle. That is incorrect. I will have to replace the hoses at my cost when I upgrade to the onboard compressor system.
3) The etrailer video says to drill the mounting holes to 5/16" diameter. The 3/8"-16 bolts immediately stripped out. I should have drilled the holes to 9/32" diameter.

I have bought a lot from etrailer and I will purchase from them again. Most of my issues stem from the poor design and instructions of the Air Lift product. For example, it doesn’t say anywhere on the box or product literature how much air hose is provided.


Slight pain in the ass to install on a 2020 ram 1500, but so worth it. Hauled home a 3500 lb dump trailer today with 40 psi in the bags and it rode like dream, rear end didn’t even sag. Can’t wait to see what it does fully loaded


Have bought air lift from you before. Last purchase box was damaged and missing parts. You sent me the correct parts in a few days. this shipment the box is torn and hardware is falling out. I havent opened the box yet to see what is missing. I will let you know.


They were easy for any handy guy to install . It took about 2 hrs. They lifted my 2500 ram to sit level with my 37ft. 5th wheel. I even leave them as is, when I'm not hooked up, and don't notice a difference. I ran two separate lines to near my rear license plate, no compressor. I'm glad I didn't spend that extra money. You rarely change the pressure, and it's so easy to do.


The air lift is of high quality. I was able to lift my 2023 Thor Sequence RV 2.5 inch with the air bags. I needed that to get over a hump in my drive way. I loved the fact I did not need any additional parts for installation. I would highly recommend this product. It will be very useful for leveling at camp sites you can level one side at a time.


I purchased the wireless 5000 helper system for my new Toyota Tundra. I pull a 21ft boat and a 33ft travel trailer. The Tundras rear suspension set down a little more than i liked. So, i researched helper kits and with "etrailer's" assistance i decided on the above mentioned system. I installed myself within a couple hours and have used for about 1 year now. i haved had great service from "etrailer" and am extremely happy with the product. Have had no issues at all with the product and will use again on my next truck. Thanks


Ordered the airbags on Monday. Received them on Friday. I have the same week. Great customer service.


The kit was well thought out during design to make for a very simple install. Manual was great with step by step pictures throughout. Adding the air compressor kit was easy & using it via app or remote is slick. All communication with etrailer was prompt and clear. Fast international shipping.


Fantastic addition to my 2008 Dodge Ram 1500 4x4 Laramie. Gone is the Dodge sag when towing.


Adds the leveling needed when I tow our 5th wheel. I have used these before on another brand of truck and would highly recommend them! Etrailer is always a pleasure to do business with. Shipping is always on time if not before I expect it.


Smoothed out my 05 gmc 3500 flat bed with sa 200 welding machine and 1000lbs of toolboxes and tools . Easy to install and product fit right in thanks too Beatrice B's customer service.


Good product. A slight change from the Firestone double convoluted airbags that originally came with my Chevy p30 Itasca motorhome. But after a few hours of getting them into position properly, the ride is extra smooth. I run these at 100psi and they may only have a slow drop to 98 or 97 psi after a few days. Instructions for the 90 degree elbow say hand tight and then 1 and half more turns, but my passenger side bag, leaked immediately. Pulled the bag back out and reset the elbow with teflon tape and gave it a few more turns. Checked with soapy water, and everything worked perfectly. Depending on the position of your axle, you may have to set the bag a few times adjusting the mounting plate for best fit. The printed template unfortunately didn't help in this 3d space. Best to get as close to upright as you can when you find the correct mounting position.

etrailer was able to deliver these in 2-3 days and had them shipped the day of order.

Show More Reviews

See what our Experts say about this Air Lift Vehicle Suspension

  • Recommended Airbags For A 2020 Ford F-250 Super Duty With Factory Prep Package
    For your 2020 Ford F-250 Super Duty with OEM Prep Package I recommend the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88391 if you have a 2 Wheel Drive model and the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL35FJ if you have a 4 Wheel Drive model. Note: The # AL35FJ will not fit TREMOR models. These airbags will install under the frame so there's no interference with your factory puck system unlike...
    view full answer...
  • Air Lift Airbags and Compressor Kit Compatible with a 2018 Ford F-350
    I called my contact at Air Lift and was able to confirm fitment of the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers for your 2018 Ford F-350. If you have the two wheel drive (2WD) version then you will want to use part # AL88391 but if you have the four wheel drive (4WD) version then you will want to use part # AL88399. Both of the above systems will work well with the Air Lift QuickShot Compressor System for Air Springs part # AL25572.
    view full answer...
  • Best Rear Suspension Enhancement For 2022 Ford F-350 2WD Dually With Uneven Sag From Slide In Camper
    With you slide in truck camper causing the passenger side of your 2022 Ford F-350 Dually 2WD to sag more than the drivers side, the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88391 are going to be the best option for you. The air bag helper springs will allow you to use different air pressures in each bag to give you the most level ride possible. The Air Lift WirelessAIR Compressor System # AL74000EZ will allow you to adjust the air pressure to each spring from either the...
    view full answer...
    Image 1 for
  • AirLift LoadLifter 5000 Rear Axle Air Bag Kits for 2017 Ford F-350
    The AirLift LoadLifter 5000 air spring kits that fit the 2016 Ford F-250 are parts # AL88396, and # AL57396 for 4WD versions and parts # AL88395 and # AL57395 for 2WD. All are shown on one of the linked pages. The other linked page shows the AirLIft kits that fit the 2017 F-350. None of these is a common fit between the two trucks. Some of the kits for the F-350 are combination springs - they are both jounce springs and air springs in one - such as kits # AL88399 (4WD) and # AL88391 (2WD)....
    view full answer...
  • Recommended Air Lift Kit for a 2 Wheel Drive 2022 Ford F-250 With the Towing Prep Package
    For your 2 wheel drive 2022 Ford F-250 with the factory prep package, you will need the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle # AL88391. There will be no drilling required for the installation and this system is compatible with in bed hitches. These have a load-leveling capacity of up to 5,000 pounds at 100 psi, but can then also be aired down to 5 psi, getting you back to as close to your stock ride as possible. A potential add-on...
    view full answer...
  • Air Suspension and Wireless Controlled Compressor Recommendation for 2020 Ford F-250
    I'd recommend the # AL88391 from Air Lift. Their LoadLifter 5000 Ultimate provides built-in jounce bumpers that help prevent body roll, and also provide support for the bags themselves should a leak develop somewhere in the system. The bumpers prevent the bags from being damaged when they're ran empty as they prevent the bag from fully collapsing. For a compressor system with a wireless remote, I'd highly recommend the # AL74000EZ Wireless AIR Compressor System, which can use the included...
    view full answer...
  • What is Difference Between Air Lift Load Lifters AL88391 and AL88399 for 2018 Ford F-250
    Since you have a 2 wheel drive version of the 2018 Ford F-250 the correct Air Lift LoadLifter 5000 is the part # AL88391 as the part # AL88399 is for the 4 wheel drive versions. Both of these are compatible with in-bed hitches like your Turnoverball as well.
    view full answer...
  • Air Lift Air Bag Helper Springs Compatibility With SuperSprings On a 2022 Ford F-250 With Camper
    Yes, you will be able to install one of the Air Lift LoadLifter 5000 kits with the SuperSprings Custom Suspension Stabilizer # SSA25 on your 2022 Ford F-250. A 4 wheel drive truck will use the Kit # AL35FJ while a 2 wheel drive will use Kit # AL88391. The Air Lift WirelessAIR Compressor System # AL74000EZ will allow you to easily control the air pressure in each air bag from either the included wireless remote or your smartphone using the Air Lift app. This compressor has a smart manifold...
    view full answer...
  • Air Helper Spring Suspension Recommendation for 2017 Ford F250 2WD
    The primary purpose of the internal jounce bumpers of the Air Lift # AL88391 LoadLifter Ultimate Air helper springs is to provide a failsafe if the system develops a leak and you lose pressure while you're towing or hauling. This is pretty important, because the factory jounce bumpers are removed to install the air helper springs. If under a heavy load, and the system loses pressure it's possible that the suspension could bottom out which is harmful for the air bags as well as the vehicle. The...
    view full answer...
  • Recommended Air Bag Kit for a 2018 Ford F-350 Dually with B&W Gooseneck Hitch Installed
    Since the B&W Gooseneck Hitch # BWGNRK1116 on your 2018 Ford F-350 installs on the sides of your frame the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88391 is what I recommend going with. These install between your axle and the bottom of your frame so it is compatible with your B&W hitch and will not prohibit the use of the lever for the hitch ball. This kit is rated for up to 5,000 lbs and features internal jounce bumpers for extra support. The air compressor kit that I...
    view full answer...
  • Can I Use Airbag on a 2020 Ford F-250 2WD with the Factory Prep Package
    The only airbag kit we have that will fit your 2020 Ford F-250 is the Air Lift LoadLifter 5000 Air Helper Springs part # AL57391 for standard or part # AL88391 for ultimate. The ultimate version has an internal jounce spring which lets you temporarily carry a load with zero air pressure in your springs. The Firestone Ride-Rite Air Helper Springs part # F95FV will not work for you because the airbag installs on the outside of the frame rail which is currently occupied by the factory prep...
    view full answer...
  • What Complete Air Bags Can I Control from the Cab of My 2021 Ford F-350 Super Duty with In-Bed Hitch
    Since you are transporting a fifth-wheel trailer, I assume you are looking for rear-axle air bags. We only carry Firestone-brand Ride Rite air bags that will work with 4-wheel drive models of 2021 Ford F-350 Super Duties with an in-bed hitch. That is the Firestone Rebel # F95FV. Apart from the 7,500-pound load-leveling weight capacity, the springs help prevent sagging while towing. They are also 100% made in the U.S.A. As far as compatibility, these air bags work with a fifth-wheel hitch...
    view full answer...
  • What are the Highest Load-Leveling Capacity Rear Air Bags for My 2022 Ford F-250 2x4?
    For the highest capacity rear air bags for your 2022 Ford F-250 Super Duty 2-wheel drive, we have two options: the Air Lift LoadLifter 5000 # AL57391 and the LoadLifter 5000 Ultimate # AL88391. Both of these systems offer your vehicle 5,000 pounds of load-leveling capacity, which is the highest capacity we have. Both of these models are compatible with your 2-wheel drive. The difference between these two systems is that the Ultimate version has an upgraded black-powder coated roll plates...
    view full answer...
  • Recommended Air Helper Spring Kit For 2018 Ford F-250 Towing 35' Trailer
    I would be happy to recommend an air helper spring kit for your 2018 Ford F-250 with the 6.2L engine. If your F-250 is a 4WD model I highly recommend the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88399 which offer 5000lbs of load leveling capacity and have an internal jounce bumper that will support the load if there is ever a failure with the bag. If you have a 2WD model instead you would need the # AL88391 instead. Both of these kits will...
    view full answer...
  • Best Air Bags For 2018 Ford F-250 2WD Towing 5th Wheel Trailer
    If you are having some squat issues even with the Timbrens then upgrading to air bags is a good idea as they will allow you to set the best air pressure for your situation to help with the squat you have. The best option for air bags that fit your 2018 Ford F-250 2WD and are compatible with your set up are from Air Lift: - Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88391 These Air Lift air bags are designed for heavier-duty applications and their 5,000 lb capacity is the...
    view full answer...

Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Mike L
Expert Research:
Mike L
Employee Joshua S
Video by:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Cole B
Installed by:
Cole B
Employee Brent H
Installed by:
Brent H
Employee David F
Installed by:
David F
Employee Mary K
Written by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Alex H
Updated by:
Alex H

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.

Product Experts Available Now!
Call 1-800-940-8924