Mevotech Supreme Suspension Control Arm and Ball Joint Assembly P/N:CMS30121
Keep your front suspension properly located and your steering geometry on point with the Mevotech Supreme control arm and ball joint assembly (CMS501061). This front left lower unit positions the wheel, allows controlled suspension travel, and provides the steering pivot through its integrated ball joint. It drops in as a direct-fit replacement for the 2008-2009 Buick LaCrosse and 2004-2008 Pontiac Grand Prix — a Buick Lacrosse control arm and Grand Prix control arm in a single part.
Every unit is validated through Mevotech's in-house and third-party durability testing. If a worn control arm or a failing ball joint is behind clunking over bumps, wandering steering, or uneven tire wear, this assembly replaces it.
Interchange: 810-290808B · 526-657
810290808B · 526657 · 19296445 · 25853335 · TC5019 · CA12903 · 15293671 · 15792920 · 2607489 · 30034543 · 10431126 · 25853339 · 5CB50192
This part cross-references / interchanges with the following part numbers:
What position on the vehicle does this Mevotech Supreme control arm fit?
It is the front left lower control arm and ball joint assembly for the listed applications.
Does it include the ball joint and mounting hardware?
Yes. It ships with the ball joint integrated into the arm, plus the part-specific castle nut and cotter pin and a 180-degree SAE grease fitting for servicing.
What vehicles does this suspension control arm fit?
The 2008-2009 Buick LaCrosse and the 2004-2008 Pontiac Grand Prix. See the Buyer's Guide tab for engine-level details.
What is this control arm made of?
Stamped-steel construction with a protective surface treatment that helps resist corrosion.
What are signs this control arm or ball joint may need replacing?
Clunking or knocking over bumps, wandering or loose steering, and uneven or premature tire wear can be signs. Diagnose the cause before replacing.
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.