Keep the front suspension located and moving as designed with the Dorman control arm 521-975, a front left upper assembly that arrives with its ball joint and bushings already installed. It fits many vehicles, among them the 1999-2000 Chevrolet Silverado 2500, 2003-2025 Chevrolet Express 2500 and 2003-2025 Chevrolet Express 3500. See the "Vehicles it fits" section for the full list and engine details.
This Dorman suspension control arm and ball joint assembly directly replaces the original assembly on the listed applications. Dorman puts it through an evaluation process intended to deliver a smooth ride, directional stability and predictable dynamics.
- Direct replacement: Built to take the place of the original assembly on the listed applications.
- Complete repair: The ball joint and bushings come pre-installed, which saves time and labor.
- Quality engineering: Put through industry-leading testing, aimed at a smooth, stable and safe ride.
- Durable design: Additional coatings help the assembly resist rust and corrosion.
What it does: The upper control arm links the steering knuckle to the vehicle. The ball joint lets the knuckle pivot as the suspension travels and the wheels steer. Signs this part may need replacing include clunking or knocking over bumps, loose or wandering steering, uneven tire wear, or a torn ball joint boot. Diagnose the cause before you replace parts. Consult the vehicle service information for the correct fasteners and whether they may be reused. A wheel alignment check is typically recommended after installation.
Interchange: 810-95122B · 623.66001
81095122B · 62366001 · TC6235 · CA8728 · 12477519 · 15049879 · 23428570 · 25793550 · CK623014 · RK623200 · RK641505 · GS50188 · CMS50188 · 2606362 · 2606362M · 4CB50131 · SK521975 · 1503045 · X07CJ0146 · JTC2605
This part cross-references / interchanges with the following part numbers:
810-95122B, 623.66001, TC6235, CA8728, 12477519, 15049879, 23428570, 25793550, CK623014, RK623200, RK641505, GS50188, CMS50188, 2606362, 2606362M, 4CB50131, SK521975, 1503045, X07CJ0146, JTC2605
Frequently Asked Questions
Which vehicles does the Dorman 521-975 fit?
It fits many vehicles, including the 1999-2000 Chevrolet Silverado 2500 and the 2003-2025 Chevrolet Express 2500 and 3500. See the "Vehicles it fits" section for the full list.
What position does this control arm install in?
It is cataloged for the front left upper position on the listed applications.
What comes pre-installed on this assembly?
The ball joint and bushings come pre-installed. Dorman notes that this saves time and labor during the repair.
What are signs a control arm or ball joint may need replacing?
Common signs include clunking or knocking over bumps, loose or wandering steering, uneven tire wear, or a torn ball joint boot. Diagnose the cause before replacing parts.
Does the assembly have any corrosion protection?
Yes. Dorman applies additional coatings to help the assembly resist rust and corrosion.
