Dorman 521-491 Suspension Control Arm - Rear Upper Forward

Dorman 521-491 Rear Upper Forward Control Arm

Dorman 521-491 is a suspension control arm engineered as a direct replacement for the original equipment on select Mercedes-Benz vehicles. Built with an aluminum body, coated finish, and rubber bushings, it is made for the rear upper forward position at the knuckle on specific CL-Class and S-Class applications.

Key Features

• Precision-engineered replacement control arm for select Mercedes-Benz rear suspension applications
• Aluminum construction with casting/forged design for OE-style fit and function
• Coated black finish for added corrosion resistance
• Rubber bushing included for suspension articulation and noise isolation
• Welded ball joint mounting type with threaded stud design
• No ball joint installed, allowing replacement of the arm assembly as specified for the application
• Compatible with rear upper forward, position at knuckle fitments

Detailed Description

This Dorman suspension control arm is built for the rear upper forward location on select Mercedes-Benz CL500, CL55 AMG, CL600, S350, S430, S500, S55 AMG, and S600 models. The aluminum casting/forged construction is paired with a coated black finish and a rubber bushing to support suspension geometry and help maintain consistent rear-end alignment characteristics. Dorman 521-491 is a practical OE-style replacement for vehicles that need a direct-fit rear upper forward control arm, including Mercedes-Benz CL500 rear upper forward, Mercedes-Benz S430 rear upper forward, and Mercedes-Benz S500 rear upper forward applications.

This part cross-references Delphi TC1752 for the same application.

What It Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from worn control arm bushings
• Uneven tire wear related to rear suspension wear
• Alignment drift caused by worn rear upper control arm components
• Excessive play at the knuckle connection

Installation Notes and Tips

Verify the rear upper forward position at the knuckle before installation. This control arm does not include mounting hardware, and the ball joint is not installed. Inspect adjacent suspension components, fasteners, and alignment settings during service, and replace any worn related parts before final alignment.

Quality Assurance

Dorman designs this control arm as a precision-engineered replacement and subjects it to rigorous testing to support reliable OE-style service on the listed Mercedes-Benz applications.