These replacement air springs are just what you need to get your vehicle riding great again!

  • Brand New Air Springs
  • Comes as a PAIR
    • Fits both LH (Driver Side) & RH (Passenger Side) REAR
  • Replaces dealer part numbers: 4L1Z-5A891-AA, 4L1Z5A891AA
  • Direct replacement
  • Built to strict quality control standards
  • Correct for both 2WD & 4WD models
Note: These springs may appear to be different sizes lengths out of the box, this is normal and both will inflate to the same size.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

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Browse 2 questions Browse 2 questions and 1 answer
Do this come with seal kit to?
Billy S on Jun 23, 2017
BEST ANSWER: This will be just the springs.
These don't have the metal sleeve, what keeps them from over inflating? I have had this problem with other bags.
Brian N on Sep 7, 2017

Vehicle Fit

  • 2003-2006 Ford Expedition Pair Air Spring Rear
  • 2003-2006 Lincoln Navigator Pair Air Spring Rear
Part #: 1ASSP00451

Ships Same Day for orders placed by 4 P.M. ET

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