Control Arm with Ball Joint Rear Pair - 1ASFK00545

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Vehicle Fit

Part Details

  • Quantity:   Pair
  • Front or Rear Location:   Rear
  • Location:   Lower

These replacement rear control arms are just what you need to bring back the safety and integrity of your vehicle's suspension and steering.


  • Comes as a PAIR
    • Fits both LH (Driver Side) & RH (Passenger Side) REAR LOWER
  • Replaces dealer part numbers: 5L8Z5500AC, EF9128500, 5L8Z 5500 AC, EF91 28500, EF9128550, EC0128550F, 5L8Z5500AD, EF912 8550, EC012 8550 F, 5L8Z 5500 AD
  • Includes new bushings
  • Direct replacements
  • Built to strict quality control standards

Worn control arm bushings can cause excessive tire wear, popping or creaking in the rear suspension, and pose a serious safety concern. Replace those bent, rusted, rotted, or damaged rear control arms with our high quality replacements.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

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.

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Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Hi I changed rear upper control arms really easy but the lower control bolt attached to the subframe on both side are not coming off I tried everything has anyone had this problem or do you know if the threads might be reversed?
Peter G September 3, 2017
Threads are not reversed. Its a shoulder bolt thats rusted. I had to cut the bolt with a small wheel air grinder.
Mark S September 3, 2017
Year Make Model Description
2001-2008Ford Escape Ford Escape Rear Lower Control Arm with Ball Joint Pair
2001-2006Mazda Tribute Mazda Tribute Rear Lower Control Arm with Ball Joint Pair
2005Mercury Mariner Mercury Mariner Rear Lower Control Arm with Ball Joint Pair
Part #: 1ASFK00545

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

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