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Black cylindrical rear air spring with convoluted bellows and metal end fittings

Unity

Unity 15-554000 Rear Air Spring

SKU CH-X3GR-63WPR

Replaces the rear air spring on 2000-2003 Ford F-150 and 1997-1999 Ford F-250 models

  • Restores air suspension performance for compatible Ford trucks
  • Over 50 years of aftermarket manufacturing experience
  • Designed for trouble-free installation and long-lasting reliability
  • Fits 1997-1999 Ford F-250 models
  • Fits 2000-2003 Ford F-150 and 2004 Heritage

Unity Rear Air Spring 15-554000

This Unity rear air spring carries part number 15-554000 and is built to restore the air suspension system on select Ford trucks. The component is manufactured by Unity, a brand with over 50 years of aftermarket experience, and is supplied new for a trouble-free installation.

Fits 1997-1999 F-250 and 2000-2004 F-150 models

The spring fits 1997 to 1999 Ford F-250 trucks and 2000 to 2003 Ford F-150 models plus the 2004 Heritage edition. Owners of other Ford trucks, different model years, or vehicles from other manufacturers will need a different air spring.

Part number 15-554000 confirms fitment

The single specification that decides whether this is the correct part is the manufacturer part number 15-554000; matching this number to the vehicle application list above verifies compatibility before purchase.

Highlights

  • Restores air suspension performance for compatible Ford trucks
  • Over 50 years of aftermarket manufacturing experience
  • Designed for trouble-free installation and long-lasting reliability
  • Fits 1997-1999 Ford F-250 models
  • Fits 2000-2003 Ford F-150 and 2004 Heritage

Specifications

BrandUNITY

Questions about this item

How do I install the 15-554000 rear air spring on my 2000 Ford F-150, and what step is often missed?

Remove the old spring, fit the new unit to the upper and lower mounts, then inflate to seat the bead before lowering the vehicle; skipping the inflation step leaves the spring folded and causes immediate damage.

What maintenance or replacement will the 15-554000 rear air spring need later?

Inspect the rubber bellows for cracks or abrasion at every oil change; replace the spring if the rubber degrades or if air pressure drops overnight.

What limit appears first on the 15-554000 rear air spring during sustained heavy loading?

The rubber bellows reaches its maximum safe extension before the chassis bump stops engage, so ride height drops and the spring can overheat if the load exceeds the vehicle's GVWR.

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