Dorman 521-293 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-293 suspension control arm and ball joint assembly is designed specifically for Mercedes-Benz ML55 AMG, ML320, ML350, ML430, and ML500 models. This pre-greased, aluminum control arm assembly offers a reliable replacement option for light suspension grade applications, ensuring proper vehicle handling and alignment.

• Pre-greased for immediate installation
• Includes rubber bushings and mounting hardware
• Aluminum control arm with black finish for corrosion resistance
• Press-in ball joint with threaded stud included and installed
• Compatible with Mercedes-Benz ML55 AMG, ML320, ML350, ML430, and ML500
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Single mounting hole with 12.3 mm diameter

Detailed Product Features and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-293) is constructed from forged and cast aluminum, providing a balance of strength and lightweight performance. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce vibration and noise, enhancing ride comfort. The ball joint is press-in mounted with a threaded stud (14 mm thread diameter) and is installed at the factory, ensuring a secure fit and reliable operation.

The control arm is designed for light suspension grade use, suitable for regular driving conditions. Its black finish helps resist corrosion, extending the service life of the component. Mounting hardware is included for a complete installation package, and the single mounting hole measures 12.3 mm in diameter, matching OEM specifications.

Compatible Vehicles and Applications

This control arm and ball joint assembly is compatible with the following Mercedes-Benz models:

• ML55 AMG
• ML320
• ML350
• ML430
• ML500

It is designed to restore proper suspension geometry and improve vehicle stability, especially when replacing worn or damaged control arms and ball joints.

Common Issues Addressed by This Assembly

• Excessive suspension noise or clunking
• Uneven tire wear due to misalignment
• Loose or unstable steering feel
• Vibration or harshness during driving
• Worn or damaged control arm bushings or ball joints

Installation Notes and Tips

Installation of the Dorman 521-293 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure all mounting hardware is torqued to manufacturer specifications. It is recommended to perform a wheel alignment after installation to maintain proper handling and tire wear.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards. This suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.