Help keep your front suspension located and your steering steady with the Delphi control arm and ball joint assembly (TC5021) — a front right (passenger-side) lower unit that locates the wheel, controls suspension travel, and provides the lower pivot point where the suspension and steering meet. It fits many vehicles, among them the 2000-2012 Chevrolet Impala, 2005-2009 Buick LaCrosse and 2005-2009 Buick Allure, as a direct-fit replacement for the listed applications. See the "Vehicles it fits" section for the full list and engine-level fitment for your vehicle.
- OE-validated durability: tested to extremes — below -40°C and above 120°C, plus 720 hours of salt spray — with dimensional and material analysis for close OE-to-aftermarket compatibility.
- 100% inspected: every arm undergoes crack detection and ultrasonic flaw detection so its materials match OE specifications.
- Precision ball stud: studs are machined to micron tolerances for durability and smooth joint operation.
- Robot-welded and coated: consistent robot welding, with anti-corrosion protection applied to each part for corrosion prevention and improved appearance.
Interchange: 623.62051 · 520-146 · 520-156 · 520-166 · 520-168 · 521-030
62362051 · 520146 · 520156 · 520166 · 520168 · 521030 · 10328906 · 15293664 · 20977508 · 22947663 · 22947665 · CB90024 · CB92034 · CK620676 · RK620676 · CMS20328 · CMS501062 · CMS50131 · CTXMS20328 · GS20328 · GS50131 · JTC1494 · JTC2655
This part cross-references / interchanges with the following part numbers:
623.62051, 520-146, 520-156, 520-166, 520-168, 521-030, 10328906, 15293664, 20977508, 22947663, 22947665, CB90024, CB92034, CK620676, RK620676, CMS20328, CMS501062, CMS50131, CTXMS20328, GS20328, GS50131, JTC1494, JTC2655
Frequently Asked Questions
Is this the right 2000-2012 Chevy Impala control arm?
Yes. TC5021 is a front right lower fit for the 2000-2012 Chevrolet Impala. Check the "Vehicles it fits" section for your exact year.
What position on the vehicle does TC5021 install in?
It's the front right (passenger-side) lower control arm with ball joint. It is not the left/driver-side or upper unit.
Will this fit a 2005-2009 Buick LaCrosse?
Yes. TC5021 serves as a 2005-2009 Buick LaCrosse control arm, and it also fits the 2005-2009 Buick Allure. See the "Vehicles it fits" section to confirm your specific vehicle.
Is the ball joint included with the control arm?
Yes. This is a control arm with ball joint assembly, so you replace both together as a single unit.
What are the signs I may need to replace this part?
Common signs of a worn control arm or ball joint include clunking or knocking over bumps, wandering or loose steering, and uneven front tire wear. Have the cause diagnosed before replacing.
