Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC6340

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$210.99
MPN: TC6340
UPC: 689604326619
Item Package Quantity: 1
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Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC6340
Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC6340
$210.99

Keep the front wheel properly located and steering movement smooth with the Delphi control arm TC6340, a front left lower control arm and ball joint assembly that installs as a direct-fit replacement for the 2006-2011 Buick Lucerne and 2006-2011 Cadillac DTS.

Delphi applies its OE steering expertise to this aftermarket assembly and tests it hard: parts withstand temperatures below -40°C and above 120°C and endure 720 hours of salt spray, while extensive dimensional and material analysis targets close compatibility between the OE and aftermarket part.

  • 100% flaw inspected: every arm goes through crack detection and ultrasonic flaw detection so materials match OE specifications.
  • Precision ball stud: the ball stud is machined to micron tolerances for durability and smooth joint operation.
  • Robot-welded: robotic welding delivers consistent build quality from part to part.
  • Anti-corrosion protection: a corrosion-resistant treatment is applied to each part for corrosion prevention and improved appearance.

If a worn control arm bushing or ball joint is behind clunking over bumps, loose steering, or uneven front tire wear, this assembly replaces the original. Sold as a single front left-side unit.

Interchange: 623.62036 · 520-393
62362036 · 520393 · 15939599 · CB90323 · CB90323PR · RK80354 · CMK80354 · GK80354 · JTC2669

This part cross-references / interchanges with the following part numbers:

623.62036, 520-393, 15939599, CB90323, CB90323PR, RK80354, CMK80354, GK80354, JTC2669

Frequently Asked Questions

What vehicles does the Delphi control arm TC6340 fit?

It's a direct-fit replacement for the 2006-2011 Buick Lucerne and 2006-2011 Cadillac DTS. Check the Buyer's Guide tab to confirm your exact vehicle.

Which corner of the vehicle does this fit?

This is the front left (driver-side) lower control arm with its integral ball joint.

Does this assembly include the ball joint?

Yes. The ball joint is integrated into the assembly, so you replace the arm and the joint together as one unit.

What are signs my Cadillac Dts control arm needs replacing?

Clunking or knocking over bumps, loose or wandering steering, and uneven front tire wear can point to a worn control arm bushing or ball joint. Diagnose the cause before replacing.

What quality checks back up Delphi control arm reviews?

Delphi puts every control arm through 100% crack and ultrasonic flaw detection, machines the ball studs to micron tolerances, and applies anti-corrosion protection to each part.