Dorman - OE Solutions Suspension Control Arm and Ball Joint Assembly P/N:521-301
$148.99
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Help keep your front end smooth and steady with this Dorman control arm, part number 521-301, a direct replacement for the front left upper arm on the 2003-2006 Mercedes-Benz S430 and 2003-2006 Mercedes-Benz S500. It comes with the ball joint and bushings already installed, so the worn arm comes out and this one goes in as a single unit.
Direct replacement: Designed to replace the original equipment arm at the front left upper position on the listed applications.
Pre-installed components: Each unit arrives with the ball joint and bushings in place, saving time and labor on the job.
Tested design: Put through Dorman's industry-leading evaluation process, which aims for a smooth, stable and safe ride with directional stability and predictable handling.
Corrosion protection: Additional coatings add rust and corrosion resistance.
The upper control arm links the steering knuckle to the chassis. It lets the wheel move up and down with the suspension while holding it in position, and its ball joint serves as a pivot for steering. Signs this Dorman suspension control arm may need replacing include clunking or knocking over bumps, loose or wandering steering, uneven tire wear, and play in the ball joint. See the Buyer's Guide tab for engine details. Replacing the arms on both sides together is often recommended for balanced handling, and an alignment check after installation is advised.
What does the Dorman suspension control arm and ball joint assembly do?
It connects the steering knuckle to the chassis at the front left upper position. It lets the wheel move with the suspension, and the ball joint provides a pivot for steering.
Which vehicles does Dorman 521-301 fit?
It is a direct replacement for the front left upper arm on the 2003-2006 Mercedes-Benz S430 and 2003-2006 Mercedes-Benz S500. Check the Buyer's Guide tab to confirm your vehicle.
What comes pre-installed on this control arm?
The ball joint and bushings are already installed in the arm. This saves the time and labor of pressing in separate components.
What are signs the upper control arm may need replacing?
Common signs include clunking over bumps, loose or wandering steering, uneven tire wear, and play in the ball joint. Diagnose the cause before replacing parts.
Do I need an alignment after installing this arm?
Replacing an upper control arm can change the wheel alignment settings. A professional alignment check after installation is recommended.
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Dorman - OE Solutions Suspension Control Arm and Ball Joint Assembly P/N:521-301
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This suspension control arm and ball joint assembly is a direct replacement for the original equipment on specific vehicle applications. An industry-leading evaluation process ensures a smooth ride,...
This suspension control arm and ball joint assembly is a direct replacement for the original equipment on specific vehicle applications. An industry-leading evaluation process ensures a smooth ride,...
This suspension control arm and ball joint assembly is a direct replacement for the original equipment on specific vehicle applications. An industry-leading evaluation process ensures a smooth ride,...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
