Keep your front suspension located and your steering tight with the Mevotech Supreme control arm and ball joint assembly (CMS90142). This front left upper unit installs as a direct-fit replacement for the 2001-2006 Kia Optima and 2003-2006 Kia Magentis, positioning the front wheel and letting the integrated ball joint pivot as you steer. Mevotech Supreme parts are engineered in-house with application-specific upgrades aimed at high-usage commercial and passenger vehicles, SUVs, fleets and working trucks.
As this Mevotech Supreme suspension control arm and its ball joint wear, you may notice clunking or knocking over bumps, loose or wandering steering, and uneven front tire wear. If a worn control arm or ball joint is the cause, replacing this assembly restores the worn part. Have the cause diagnosed first, since these symptoms can also come from other suspension components.
Interchange: 622.51033 · 521-769
62251033 · 521769 · 19291490 · TC2924 · CA8785 · 5441038600 · 30030463 · 5021254 · SK521769 · SRK620103
This part cross-references / interchanges with the following part numbers:
What vehicles does the Mevotech Supreme CMS90142 fit?
This front left upper unit is a direct-fit replacement for the 2001-2006 Kia Optima and 2003-2006 Kia Magentis. Check the Buyer's Guide tab to confirm your exact vehicle.
Is this an upper or lower Kia Optima control arm?
This CMS90142 is the front left upper control arm, with an integrated ball joint pressed into a stamped steel arm.
Does it include the ball joint and installation hardware?
Yes. The ball joint is built into the assembly, and Mevotech provides a part-specific nylon locking nut plus a 180-degree SAE grease fitting to make installation faster.
What are signs my control arm or ball joint may need replacing?
Watch for clunking or knocking over bumps, loose or wandering steering, and uneven front tire wear. Have the cause diagnosed, since these signs can also come from other worn suspension parts.
Can the ball joint be greased?
Yes. It includes a 180-degree SAE grease fitting so you can lubricate the ball joint during service. Follow the vehicle service information for the correct grease and intervals.
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.
