Dorman 520-963 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-963 suspension control arm and ball joint assembly is engineered for reliable performance in select Mercedes-Benz models. Designed with pre-greased components and included bushings, this assembly ensures smooth suspension operation and improved vehicle handling.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete installation
• Threaded ball joint stud with a 14 mm thread diameter
• Constructed from durable steel with a black finish
• Compatible with various Mercedes-Benz CLS, E, and SL series models

Product Features and Specifications

This suspension control arm and ball joint assembly features a pressed attachment type and a casting/forged control arm design, providing strength and durability for light suspension grade applications. The assembly includes one mounting hole with a diameter of 12.3 mm, and the control arm measures up to 288.5 mm in width and 237 mm in length. Rubber bushings are included to absorb vibrations and reduce noise, while the ball joint is installed and ready for use. Mounting hardware is also provided to facilitate a straightforward replacement process.

Compatible Mercedes-Benz Models

This Dorman 520-963 control arm and ball joint assembly is compatible with the following Mercedes-Benz vehicles: CLS55 AMG, CLS63 AMG, CLS350, CLS500, CLS550, E55 AMG, E63 AMG, E320, E350, E500, E550, SL55 AMG, SL63 AMG, SL65 AMG, SL500, SL550, and SL600. It is designed to meet the suspension requirements of these models, ensuring proper fit and function.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Ball joint wear leading to steering instability
• Excessive suspension noise or vibration
• Misalignment due to bent or compromised control arms
• Difficulty maintaining proper suspension geometry

Installation Notes and Tips

Before installation, verify vehicle compatibility with the Dorman 520-963 part number. The assembly comes pre-greased and includes all necessary bushings and mounting hardware, simplifying the replacement process. Use proper tools to remove the old control arm and ball joint assembly, and torque mounting bolts to manufacturer specifications. Since this part is not adjustable, ensure correct alignment during installation to maintain suspension performance.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for durability and fitment. The 520-963 control arm and ball joint assembly undergoes rigorous quality checks to ensure reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.