Designed for a smooth ride and predictable handling, this Dorman control arm, part number 520-139, is a front left upper suspension arm that comes with its ball joint already installed and serves as a direct replacement for the original equipment. It fits many vehicles, among them the 1995-2005 Chevrolet Blazer, 1992-2005 GMC Jimmy and 1984-2004 Chevrolet S10. See the "Vehicles it fits" section for the full list and engine details.
The upper control arm connects the steering knuckle to the frame. It lets the wheel travel up and down while holding it in position, and the ball joint forms the pivot at the knuckle. Dorman puts each assembly through an industry-leading evaluation process aimed at a smooth ride, directional stability and predictable dynamics.
- Direct replacement: designed to replace the original front left upper assembly on the listed applications.
- Ready to install: the ball joint and bushings come pre-installed, which saves time and labor.
- Tested: put through industry-leading testing intended for a smooth, stable ride.
- Corrosion protection: additional coatings provide rust and corrosion resistance.
This listing is for one front left upper arm, sold individually. Replacing the arms on both sides together is recommended for balanced handling. Have the wheel alignment checked after installation.
Interchange: 810-95138B · 622.66018
81095138B · 62266018 · TC5445 · CA10252 · 15661507 · 8156615070 · CK620172 · RK620172 · FA4435 · GS20354 · CMS20354 · 2605539 · 3CB50049 · SRK620172 · 1503019 · JTC1519
This part cross-references / interchanges with the following part numbers:
810-95138B, 622.66018, TC5445, CA10252, 15661507, 8156615070, CK620172, RK620172, FA4435, GS20354, CMS20354, 2605539, 3CB50049, SRK620172, 1503019, JTC1519
Frequently Asked Questions
Is this the right 1984-2004 Chevrolet S10 control arm?
It is listed as the front left upper control arm for the 1984-2004 Chevrolet S10. Use the "Vehicles it fits" section to check your exact year and model.
What does an upper control arm do?
It connects the steering knuckle to the frame and lets the wheel travel up and down while holding it in position. The ball joint is the pivot point between the arm and the knuckle.
What comes with the Dorman suspension control arm and ball joint assembly?
Each assembly arrives with the ball joint and bushings pre-installed, so they don't need to be pressed in separately. This saves time and labor.
Is this arm sold individually or as a pair?
It is sold individually and fits the front left upper position. Replacing the arms on both sides together is recommended for balanced handling, and an alignment check after installation is a good idea.
What are signs the upper control arm may need replacing?
Common signs include clunking over bumps, loose or wandering steering, and uneven tire wear. These can have other causes, so diagnose the suspension before replacing parts.
