The Air Lift LoadLifter 5000 Ultimate is a rear load-leveling air helper spring kit for the 1999-2004 Ford F-250 and F-350 Super Duty 4WD. It adds up to 5000 lbs of leveling capacity to control squat, sway, body roll, 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 jounce bumper replaces the factory bumper so the springs run safe at zero PSI. The underframe kit works with most in-bed hitches; some vehicle modification is required and a minimum of 9 inches between tire and frame is needed.
| 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 bumper - safe at zero PSI |
| Mounting | Underframe - works with most in-bed hitches |
| Fitment Note | Requires 9 in. between tire and frame - some vehicle modification required - does not fit cab & chassis |
| Part Number | 88390 |
| Warranty | Limited lifetime - 60-day ride satisfaction guarantee |
| Fitment | 1999-2004 Ford F-250 / F-350 Super Duty 4WD |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004 | Ford | F-250 Super Duty | Harley-Davidson Edition |
| 2004 | Ford | F-250 Super Duty | King Ranch |
| 1999-2004 | Ford | F-250 Super Duty | Lariat |
| 1999-2004 | Ford | F-250 Super Duty | XL |
| 1999-2004 | Ford | F-250 Super Duty | XLT |
| 2004 | Ford | F-350 Super Duty | Harley-Davidson Edition |
| 2003-2004 | Ford | F-350 Super Duty | King Ranch |
| 1999-2004 | Ford | F-350 Super Duty | Lariat |
| 1999-2004 | Ford | F-350 Super Duty | XL |
| 1999-2004 | Ford | F-350 Super Duty | XLT |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
