The Air Lift LoadLifter 5000 Ultimate is a rear load-leveling air helper spring kit for the 2017-2026 Ford F-250 and F-350 Super Duty, fitting both single rear wheel (SRW) and dual rear wheel (DRW) models. It works with the factory leaf springs to add up to 5000 lbs of leveling capacity and control squat, sway, and bottoming-out when towing or hauling. Air pressure is adjustable from 5 to 100 PSI to match the load, and an internal closed-cell urethane jounce bumper replaces the factory bumper so the springs run safe at zero PSI. The kit includes 2 air springs, brackets, air lines, a Schrader valve, roll plates, and all hardware, and requires no frame drilling.
Specifications
| Type | Rear load-leveling air helper springs (LoadLifter 5000 Ultimate) |
| Capacity | Up to 5000 lbs (do not exceed vehicle GVWR) |
| Pressure Range | 5-100 PSI |
| Jounce Bumper | Internal closed-cell urethane bumper - safe at zero PSI |
| Mounting | Underframe - no frame drilling - works with most in-bed hitches |
| Fitment Note | Fits single rear wheel (SRW) and dual rear wheel (DRW) models |
| Part Number | 88391 |
| Warranty | Limited lifetime - 60-day ride satisfaction guarantee |
| Fitment | 2017-2026 Ford F-250 / F-350 Super Duty |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2022 | Ford | F-250 Super Duty | King Ranch |
| 2017-2022 | Ford | F-250 Super Duty | Lariat |
| 2021 | Ford | F-250 Super Duty | Limited |
| 2021 | Ford | F-250 Super Duty | Platinum |
| 2017-2026 | Ford | F-250 Super Duty | XL |
| 2017-2022 | Ford | F-250 Super Duty | XLT |
| 2017-2022 | Ford | F-350 Super Duty | King Ranch |
| 2017-2026 | Ford | F-350 Super Duty | Lariat |
| 2021 | Ford | F-350 Super Duty | Limited |
| 2017-2022 | Ford | F-350 Super Duty | Platinum |
| 2017-2026 | Ford | F-350 Super Duty | XL |
| 2017-2026 | Ford | F-350 Super Duty | XLT |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
