Bring back tight, controlled handling with the Mevotech Supreme control arm and ball joint assembly, MPN CMS80174. It installs as a direct-fit replacement in the front left upper position on the 1999-2005 Mazda Miata (NB), locating the wheel through its suspension travel while the integrated ball joint lets the knuckle pivot for steering. If worn arm bushings or a loose ball joint are behind clunking, wander, or uneven tire wear, this assembly replaces them.
Built for high-usage passenger, SUV, fleet and working-vehicle duty, this is a fitting choice among Miata a arms and NB Miata control arms. It covers the front left upper corner; for even handling, replace the opposite-side upper control arm at the same time.
Interchange: 524-465
524465 · 19326025 · LGS80174 · TC3637 · CB65027 · CB65027PR · CA8739 · 3CB80206 · RK622179 · C5GS80174 · N06834250 · NC1434250 · NC1434250A · GS80174 · 2607847 · 147108 · 30030693 · X32CJ0813
This part cross-references / interchanges with the following part numbers:
What does this front upper control arm do?
It locates the front wheel and lets it move through suspension travel, while the integrated ball joint allows the steering knuckle to pivot for steering and to absorb road inputs.
What vehicle does CMS80174 fit?
It is a direct-fit replacement for the 1999-2005 Mazda Miata, in the front left upper position. See the Buyer's Guide tab to confirm your exact application.
Is mounting hardware included?
Yes. The Mevotech Supreme Labor Saver design includes the essential mounting hardware to simplify installation.
What are signs this part may need replacing?
Clunking or knocking over bumps, wandering or loose steering, and uneven front tire wear can be signs of worn control arm bushings or a failing ball joint. Diagnose the cause before replacing.
Do I need to replace the other side too?
This unit covers the front left upper corner and is sold individually. Replacing the opposite-side upper control arm at the same time is a good practice for balanced, even 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.
