Air Lift LoadLifter 5000 Ultimate Rear Air Spring Kit - Ford F-250 F-350 Super Duty 4WD 1999-2004

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.

Specifications

Documents: Installation Instructions (PDF)

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• 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-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy