Dorman 521-210 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-210 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 offers a straightforward replacement solution for maintaining suspension integrity.

• Pre-greased for immediate use without additional lubrication
• Includes rubber bushings and mounting hardware for complete installation
• Steel construction with casting/forged control arm for strength and durability
• Press-in ball joint with pinch stud type, installed and ready
• Compatible with multiple Mercedes-Benz models including 190E, 300E, and SL500

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-210) is designed with a light suspension grade type suitable for regular driving conditions. The control arm measures up to 288.5 mm in width and 237 mm in length, finished in black for corrosion resistance. The assembly includes one mounting hole with a diameter of 12.3 mm, and the ball joint features a 14 mm thread diameter. Rubber bushings are included to reduce vibration and noise, while the mounting hardware ensures a secure fit. The ball joint is press-in mounted and installed, eliminating the need for separate ball joint installation.

Compatible Mercedes-Benz Models

This Dorman suspension control arm and ball joint assembly is compatible with a range of Mercedes-Benz vehicles, including the 190E, 260E, 300CE, 300D, 300E, 300SL, 300TD, 300TE, 500E, 500SL, E300, E500, SL320, and SL500. It is designed to meet the suspension requirements of these models, providing a direct replacement for worn or damaged components.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Corroded or weakened control arm compromising suspension alignment
• Loose or missing mounting hardware affecting suspension safety
• Vibration and noise from deteriorated suspension components

Installation Notes and Tips

Installation of the Dorman 521-210 assembly requires basic suspension repair tools. Since the ball joint is pre-installed and the control arm is pre-greased, the assembly simplifies the replacement process. Ensure the vehicle is securely lifted and supported before removal of the old control arm. Verify torque specifications for mounting hardware and ball joint pinch stud during installation. Alignment check after installation is recommended to maintain proper handling and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-210 control arm and ball joint assembly undergoes quality inspections to ensure durability and performance. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in its long-term reliability.