Tighten up steering feel and suspension control on your roadster with the Delphi Suspension Ball Joint (TC5166), a front upper ball joint that drops in as a direct-fit replacement for the 1990-1997 Mazda Miata. A ball joint pivots between the control arm and steering knuckle, carrying suspension loads while letting the wheel turn and travel — worn units can show up as clunking over bumps, loose or wandering steering, and uneven tire wear. If a failed front upper joint is the cause, this Delphi unit replaces it.
Sold individually; ball joints wear as a matched set, so replacing both sides together is recommended for balanced handling.
Interchange: NA01-34-200A · NA23-34-200 · NA23-34-200A · NA23-34-250 · NA23-34-250A
NA0134200A · NA2334200 · NA2334200A · NA2334250 · NA2334250A · K500210
This part cross-references / interchanges with the following part numbers:
What vehicles does this Delphi ball joint fit?
It's a direct-fit front upper Suspension Ball Joint for the 1990-1997 Mazda Miata. Check the Buyer's Guide tab to confirm the exact fit for your vehicle.
Where does this Miata ball joint mount?
The catalog lists it as the front upper ball joint, connecting the upper control arm to the steering knuckle so the wheel can pivot and travel while supporting suspension loads.
What are signs my ball joint may need replacing?
Common signs include clunking or knocking over bumps, loose or wandering steering, and uneven tire wear. Have the cause diagnosed, since these symptoms can have other sources.
What part numbers does the TC5166 replace?
It cross-references NA01-34-200A, NA23-34-200, NA23-34-200A, NA23-34-250, NA23-34-250A and K500210 (also shown without dashes).
Should I replace both ball joints at once?
This listing is for one ball joint sold individually. Since both sides wear similarly, replacing them together as a matched pair is recommended for balanced handling.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
