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

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

Part Number: AL88399
In Stock
$452.55
Retail:$845.22
You Save: $392.67
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
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

In Use/Installed

Customer Photos

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 AL88399 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (1171)
  • Q & A (0)
  • Photos

Air Lift Vehicle Suspension - AL88399

  • Air Springs
  • Towing/Load Leveling
  • Air Lift
  • Heavy Duty
  • Rear Axle Suspension Enhancement

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.


Features:

  • 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
  • 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


Specs:

  • 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 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.



88399 AirLift Load Lifter 5000 Ultimate Air Bags with Internal Jounce Bumpers - Back Axle

Installation Details AL88399 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.7

1166 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.

by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:


25
1166
Show More Reviews

See what our Experts say about this Air Lift Vehicle Suspension

  • Air Bag Suspension Enhancement Recommendation for 2017 Ford F-250 that Won't Add Height
    The jounce bumper in the # AL88399 can cause a slight increase in ride height even when the bags are uninflated. There is a much better option for you since you do not want any additional height. Instead you'd want the Firestone kit part # F2600 which will not add height when uninflated and actually will give you a higher quality air bag. This would be your best solution.
    view full answer...
  • What is the Difference Between # AL88399 and # AL57399 for 2017 For F-250 Super Duty
    Hello Cory. The difference between the two is that the Air Lift LoadLifter 5000 # AL88399 has an internal jounce bumper (bump stop), and the Air Lift LoadLifter 5000 # AL57399 does not. Both products have a 5,000 pound load leveling capacity, and are both a confirmed fit for you 2017 Ford Super Duty. If I were you, I would go with the # AL57399. The only real benefit that I see in having the jounce bumper is if you were carrying a really heavy load and the bag were to fail. I have heard...
    view full answer...
  • Can I Use Airbag on a 2019 Ford F-250 with the Factory Prep Package
    The only airbag kit we have that will fit your 2019 Ford F-250 is the Air Lift LoadLifter 5000 Air Helper Springs part # AL57399 for standard or part # AL88399 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 # F2600 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 is Minimum Air Pressure Needed in Air Lift Air Bag Supplemental Braking System
    Hey Donovan, you do need to have a minimum of 5 psi in the Air Lift air bag kit part # AL88399 that you have. If you run less pressure than that the bag will eventually deform and wear itself out. At 5 psi though you won't feel them at all so you don't have to worry about unloaded ride quality.
    view full answer...
  • Will Air Lift Air Bags Fit 2017 Ford F-250 With Front Leveling Kit
    Hi Cory; the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88399 and Air Lift Load Controller Compressor System # AL25854 are compatible. Both can be used on your 2017 Ford F-250 with the front leveling kit. The leveling kits only lift the front of the truck and don't alter the rear suspension.
    view full answer...
  • Can Air Lift Air Bags be Filled Simultaneously Using Air Lift Union Tee on 2019 Ford F-350
    Yes, you can simultaneously inflate your Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88399 if you use the Air Lift Union Tee for 1/4" Air Lines # AL21838. This will allow you to fill both bags using a single inflation valve.
    view full answer...
  • Air Bag Helper Springs For a 2018 Ford F-350 Cab and Chassis
    Your 2018 Ford F-350 is a Cab and Chassis model and not a Super Duty. For this you will need to use the Firestone Ride-Rite Air Helper Springs # F2176 as long as you have 7-1/2" between your frame and the inside of the tires. The Air Lift # AL88399 will only fit on the Super Duty models. Currently Air Lift does not offer a kit for your F-350 Cab and Chassis model.
    view full answer...
    Image 1 for Image 2 for
  • Suspension Enhancement for 2018 Ford F-450 Super Duty
    You are correct that Air Lift specifies the # AL88399 cannot be used on dual rear wheel models, which is what the 2018 Ford F-450 pickup has standard so they would not work for your truck. The best suspension enhancement for this truck is going to be the SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA25; I checked with SuperSprings and this kit is a fit for your truck. This kit is a helper leaf spring which has different settings which allow you to choose the best...
    view full answer...
  • Can I Use the Air Lift LoadLifter 5000 # AL88275 on My 2018 Ford F-250 FX4
    You will not be able to move the Air Lift LoadLifter 5000 Ultimate Air Springs w/ Internal Bumpers # AL89275 from your old 2005 Silverado 3500 to your new 2018 Ford F250 FX4. The # AL88275 will not be compatible with your new truck. The correct air lifter for your 2018 Ford F-250 FX4 will be the Air Lift LoadLifter 5000 Ultimate Air Springs w/ Internal Bumpers # AL88399. If you also wanted to add a compressor system, the best choice is the Air Lift # AL25980EZ.
    view full answer...
  • Will the Air Lift Air Shock Controller Compressor System Work with Air Lift 5000 Air Bags?
    Yes, the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88399 will work with the Air Lift Air Shock Controller Compressor System for Air Shock Absorbers # AL25804.
    view full answer...
  • Rear Airbags for my 2019 Ford F350 With Gooseneck Fifth Wheel Package
    Yes! the Air Lift Load Lifter 5000 # AL88399 attaches to the bottom of your 2020 Ford F-250's frame it will easily fit with most any gooseneck hitch you have installed in your truck to attach your fifth wheel hitch to. This installs by removing the jounce bumpers that the truck has now that prevent the truck from bottoming out and installs using the same attachment holes so it would not create any interference. The bags of this kit also have internal jounce springs as well so you don't...
    view full answer...
  • What Air Bag System Should I Use on my 2020 Ford F-250 with Factory Prep Package?
    Because you have the factory prep package on your 2020 Ford F-250 you'll need an airbag system that installs under the frame rail as opposed to outside of it, where the factory prep package would interfere with it. For that reason I recommend going with the Air Lift LoadLifter 5000 Air Helper Springs # AL57399 (standard) or the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88399 (ultimate). The Ultimate version has an internal jounce bumper that will allow you to temporarily...
    view full answer...
  • Air Bag Suspension Enhancement Kit for 2019 Ford F-250 with B and W Gooseneck Hitch
    The Air Lift suspension enhancement kit part # AL88399 is a confirmed fit for your 2019 Ford F-250 and is compatible with your B and W Turnoverball gooseneck hitch. You will need spacers like the # AL52420 which is correct size for your 2.5 inch lift.
    view full answer...
  • Recommended Air Bag Kit and Compressor System for 2019 Ford F-350
    For your 2019 Ford F-350 I recommend the Air Lift LoadLifter 5000 Ultimate Air Springs # AL88399. I really like these particular air springs because they also feature internal bumpers to provide even more load support. This essentially gives you the benefits of both an air bag and a jounce-style spring system all in one. The air springs have a 5,000 pound load-leveling capacity. For a compressor kit the Air Lift Load Controller Compressor System # AL25856 will work perfectly. This heavy-duty...
    view full answer...
  • Recommended Front and Rear Air Helper Springs For 2018 Ford F-350 4WD
    We have just what you are looking for. For the rear of your 2018 Ford F-350 Super Duty 4WD I recommend the Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers - Rear Axle # AL88399 which provide up to 5000lbs of load leveling support, and the internal jounce bumpers are there to allow you to keep going should a air bag failure happen. For the front I recommend the Air Lift 1000 Air Helper Springs for Coil Springs - Front # AL80537 which install inside of...
    view full answer...
  • Air Lift LoadLifter 5000 Ultimate Air Helper Springs Compatible with 2016 Ford F-250 Super Duty
    Air Lift does make a kit for your 2016 Ford F-250 Super Duty, however, the # AL88399 is not going to work since it's only compatible with 2017-2019 Ford Super Duty pickups. The correct Air Lift LoadLifter 5000 Ultimate Air Helper Springs for your truck are part # AL88395 for 2 wheel drive, or # AL88396 if you have a 4 wheel drive. Unless the lift on your truck is a body lift, you'll need a spacer kit as well. If your truck does have a suspension lift, measure the distance between the...
    view full answer...
    Image 1 for
  • Is the Air Lift LoadLifter 5000 Ultimate # AL88399 Compatible with a 2017 F-250 4WD w/ Prep Package
    The Air Lift LoadLifter 5000 Ultimate # AL88399 that you referenced is confirmed to fit your 2017 Ford F-250 4WD with the 5th wheel prep package. I have confirmed this with my contact at Air Lift. I also recommend installing a compressor system with your air bags. This allows you to increase the psi of your air bags wherever you are. No need to hunt down an air compressor because you are loading up some equipment. We have the Air Lift Load Controller II # AL25592 which is an analog system...
    view full answer...
  • Will the Air Lift WirelessONE Compressor System Work In Cold Climates
    The Air Lift WirelessONE Compressor System part # AL25980 will work just fine in very cold climates. However, you will need to either install the system inside the cab of the vehicle or install the system outside the cab and simply use some air brake anti-freeze when winter rolls around which is the option I recommend. I know Air Lift does extensive testing in colder climates so you should not have any issues with durability/longevity. I have attached a photo for you which further explains...
    view full answer...
    Image 1 for
  • Can Air Lift Load Lifter 5000 Fit 2020 F-250 FX4 with B&W Turnover Gooseneck Hitch
    Yes, since the Air Lift Load Lifter 5000 # AL88399 attaches only to the bottom of your 2020 Ford F-250's frame it will easily fit with the B&W Turnoverball gooseneck hitch you have installed as well! This installs by removing the jounce bumpers that the truck has now that prevent the truck from bottoming out and installs using the same attachment holes so it would not create any interference. The bags of this kit also have internal jounce springs as well so you don't lose that feature of...
    view full answer...
  • Will Air Lift Air Bags AL88399 Fit 2019 Ford F-250 Super Duty 4WD With Pull-Rite 5th Wheel Hitch
    We do have air bags that will fit your 2019 Ford F-250 Super Duty 4WD, and I took a long look at the instructions for the Air Lift LoadLifter 5000 Ultimate Air Springs # AL88399 and the install brackets for the Pull-Rite on your truck, and these won't work out that I can see. The air bags I can guarantee will fit your 2019 F-250 Super Duty 4WD with the Pull-Rite hitch and brackets are from Firestone. They have a bit of a different top bracket that won't cause any interference and is compatible...
    view full answer...
  • 2019 Ford F-250 FX4 Gooseneck Hitch, Air Bags and Compressor Recommendations
    The Draw-tite Hide-A-Goose Underbed Gooseneck Trailer Hitch # 9468-94 and Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88399 will work together well and not have any interference issues on your 2019 Ford F-250 FX4. The Hide-A-Goose # 9468-94 does have the highest weight capacity of the available goosenecks for your 2019 F-250, and the air bags are a great addition to keep the back end from sagging while your towing. I do recommend that you install the gooseneck first, that...
    view full answer...
    Image 1 for
  • Will the Air Lift LoadLifter Air Springs for a 2019 Ford F-250 4x4 Raise the Truck
    The Air Lift LoadLifter 5000 Ultimate Air Helper Springs part # AL88399 which are a fit for a 2019 Ford F-250 4x4 will not lift the cab height of the vehicle so long as you deflate the airbags to the minimum setting of 5 psi while unloaded. If you did have say 50 psi in the airbags while unloaded then the airbags would lift the height of the vehicle but only marginally, most likely not even 1/2" or so. If you need to inflate and deflate the airbags frequently then you'll want an on-board...
    view full answer...
  • Suspension Enhancement Recommendation for 2018 Ford F-350 with Factory Rail Kit
    The factory Ford Fifth Wheel Rail Kit your 2018 Ford F-350 is not considered a side-mount rail kit so you would not be able to use the Air Lift kit you mentioned. Instead we have the Timbrens part # TFR350SDJ which are a confirmed fit for your truck, I recommend them as they will give you the support you want, and are compatible with the in-bed hitch. What's also great about the Timbrens is that they install much easier than air bags and you never have to mess with inflating or deflating...
    view full answer...
  • Recommended Air Spring Suspension Enhancement for 2019 Ford F-350 Dually 4x4
    The Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle # F35FV are not the style with the integrated jounce springs but they do install in the same location as the factory jounce. The # F2600 will fit a 2019 F-350 but only the 2WD version. The # F35FV is made for 4x4 options that are dual rear wheel so it is the correct fit for your truck. Unfortunately we don't have a video of this installation but it is similar to many others that install in the same location. If...
    view full answer...
    Image 1 for


< Previous



Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Joshua S
Video Edited:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
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
Employee Michael B
Updated by:
Michael B
Employee Noah M
Updated by:
Noah M
Employee Shane H
Test Fit:
Shane H
Employee Kevin C
Test Fit:
Kevin C
Employee Thomas T
Video by:
Thomas T

At etrailer.com 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. Let us know if anything is missing or if you have any questions.


<