Dorman 521-524 Suspension Control Arm and Ball Joint Assembly - Front Right Lower Rearward

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-524 suspension control arm and ball joint assembly is engineered for reliable performance in select Mercedes-Benz models. Designed with pre-greased components and rubber bushings, this assembly ensures smooth suspension operation and improved vehicle handling.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for vibration dampening
• Press-in ball joint with threaded stud for secure fitment
• Constructed from durable iron with a black finish
• Mounting hardware included for straightforward installation
• Compatible with multiple Mercedes-Benz models including CL63 AMG, S550, and SL550

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is designed with a casting/forged iron control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly features a single mounting hole with a diameter of 12.3 mm and includes a pre-installed ball joint with a 14 mm threaded stud. Rubber bushings are integrated to reduce noise and absorb road shocks, contributing to a smoother ride. The assembly is suspension grade light and comes with all necessary mounting hardware, though it does not include a grease fitting.

Compatible Mercedes-Benz Models

This Dorman 521-524 control arm and ball joint assembly is compatible with a range of Mercedes-Benz vehicles, including the CL63 AMG, CL65 AMG, CL500, CL550, CL600, S63 AMG, S65 AMG, S400, S500, S550, S600, and SL550. It is designed to meet the suspension requirements of these models, ensuring proper fit and function.

Common Suspension Issues Addressed

• Worn or damaged control arms causing poor handling
• Ball joint wear leading to steering instability
• Excessive suspension noise or vibration
• Loose or damaged bushings affecting ride comfort
• Corrosion or fatigue in original suspension components

Installation Notes and Tips

Installation of the Dorman 521-524 assembly requires basic suspension knowledge and tools. The control arm comes pre-greased and includes mounting hardware, simplifying the replacement process. Ensure the vehicle is properly supported and aligned after installation. Since the ball joint is press-in type with a threaded stud, verify torque specifications for secure mounting. This assembly is not adjustable, so precise fitment is critical.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-524 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.