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The Air Lift LoadLifter 5000 Ultimate Air Spring Kit (88138) is designed to provide dependable load support for Ford E-Series vans and Class C motorhomes, delivering up to 5,000 lbs. of load-leveling capacity. This rear air spring kit is ideal for work vans, passenger vans, and RV applications that experience rear-end sag, harsh ride quality, or bottoming out under load.
As part of Air Lift’s Ultimate series, this kit features an internal jounce bumper, allowing the air springs to be safely operated at zero PSI while absorbing shock and protecting the suspension. Fully adjustable from 5–100 PSI, the system allows you to fine-tune ride height and comfort whether the vehicle is loaded or unloaded.
The kit installs at the rear suspension and is engineered for durability, ease of use, and long-term reliability, making it a trusted solution for commercial and recreational applications alike.
*Do not exceed the vehicle’s GVWR.
Fits the following vehicles:
Ford E-250 Econoline / E-250 Cargo & Passenger Vans
Ford E-350 Econoline / E-350 Super Duty Vans
Ford E-350–based Class C Motorhomes
Model Years:
1975–2026 (varies by model and configuration)
Fitment Notes:
Rear suspension application
Drilling required for installation
Designed for cutaway, van, and RV chassis applications listed above
Part Number: 88138
Series: LoadLifter 5000 Ultimate
Application Type: Rear Kit
Load-Leveling Capacity: Up to 5,000 lbs.*
Operating Pressure: 5–100 PSI
Replacement Air Spring: 84252
Drilling Required: Yes
Dimensions & Weight:
Weight: 18.8 lb
Width: 9.25 in
Depth: 14.125 in
Height: 10.75 in
*Load-leveling capacity is based on air spring system capacity and does not increase GVWR.
**Internal jounce bumper allows zero-PSI operation without damage.
