Replace a worn front right upper arm in one step with this Delphi control arm, part number TC6363, which combines the arm and its ball joint in a single unit. It fits many vehicles as a direct-fit replacement for the listed applications, among them the 1999-2000 Chevrolet Silverado 2500, 2003-2012 Chevrolet Express 2500 and 2003-2012 Chevrolet Express 3500. See the "Vehicles it fits" section for the full list and engine details.
As a control arm and ball joint assembly, it links the steering knuckle to the vehicle's frame and lets the wheel travel up and down, while the built-in ball joint gives the knuckle a pivot point for steering. Delphi's OE safety technology is fitted to millions of vehicles worldwide, and the company brings that OE expertise to its aftermarket steering portfolio. Its dimensional and material analysis is intended to give the best compatibility between the OE and aftermarket part.
- Tested to extremes: exposed to temperatures below -40°C and above 120°C, plus 720 hours of salt spray.
- Inspected and robot-welded: every control arm receives 100% crack detection and ultrasonic flaw detection to check that materials match OE specifications, and robot welding supports consistent performance and quality.
- Precision ball studs: machined to micron tolerances for smooth joint operation.
- Anti-corrosion protection: applied to each part for corrosion prevention and a clean appearance.
Sold individually as the front right upper arm; replacing both sides together is recommended.
Interchange: 623.66002 · 521-976
62366002 · 521976 · B6696XL · CB90498 · CB90498PR · 15049880 · 23428570 · 25793553 · B6696 · CK623015 · RK641506 · CMS50189 · CTXMS50189 · GS50189 · JTC2604
This part cross-references / interchanges with the following part numbers:
623.66002, 521-976, B6696XL, CB90498, CB90498PR, 15049880, 23428570, 25793553, B6696, CK623015, RK641506, CMS50189, CTXMS50189, GS50189, JTC2604
Frequently Asked Questions
Will this Chevrolet Silverado 2500 control arm fit my 1999 or 2000 truck?
Yes, TC6363 is listed for the 1999-2000 Chevrolet Silverado 2500, and it also fits the 2003-2012 Chevrolet Express 2500 and 3500. See the "Vehicles it fits" section for the full list.
What does a control arm with ball joint do?
The upper control arm links the steering knuckle to the frame and lets the wheel move up and down, while the built-in ball joint gives the knuckle a pivot point for steering.
What are signs my upper control arm may need replacing?
Common signs include clunking or knocking over bumps, loose or wandering steering, uneven tire wear and play in the ball joint. Have the suspension inspected to confirm the cause before replacing parts.
How does Delphi test the TC6363?
Delphi exposes its steering parts to temperatures below -40°C and above 120°C and 720 hours of salt spray. Its control arms also receive 100% crack detection and ultrasonic flaw detection.
Is this control arm sold as a pair?
No, TC6363 is sold individually as the front right upper arm. Replacing both sides together is recommended, and a wheel alignment is commonly recommended after installing a control arm.
