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Replacement front upper ball joint for NA

NA Replacement Front Upper Ball Joint
Replacement front upper ball joint for NA
Fix a worn upper ball joint without replacing the whole arm!

Availability: On backorder
You can place an order now and we'll reserve it for you. We are expecting the parts around June 20th, 2020.



The NA front upper control arm contains a ball joint that was not designed to be replaceable. Moog to the rescue! This replacement unit will let you change a worn upper ball joint without having to change the whole arm. It's pressed in and includes a snap ring to hold it in place. We've seen other replacement ball joints that would pop back out again unless they were tack-welded into place, but not this one.

You can tell if your upper ball joint is bad if you get a hard thump under braking or sudden cornering loads. Also, the ball joint should have some resistance to movement and not just flop around. Failure usually starts with a damaged boot that allows debris into the joint.

Cars that use NA uprights should use an NA ball joint. Cars with NB uprights will need an arm with an NB ball joint - so don't think about using this for your NB.

This is a Moog aftermarket replacement part. 

Additional Information

Additional Information

Part number M13-81055
TÜV approval available No
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
Manufacturer Moog
Flyin' Miata exclusive No
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions Emissions regulations do not apply
Instructions for this part are not currently available online.