Dorman 520-937 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 520-937 suspension control arm and ball joint assembly is engineered for select BMW models, including the 645Ci, 650Ci, 650i, 745i, 745Li, 750i, 750Li, 760i, 760Li, and M6. Designed with durability and performance in mind, this assembly provides a reliable replacement for worn or damaged suspension components.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete setup
• Aluminum control arm with casting/forged construction for strength and weight savings
• Press-in ball joint with threaded stud, installed and ready to use
• Compatible with BMW 6 and 7 Series models, including M6 variants

Detailed Product Features and Specifications

The Dorman 520-937 control arm and ball joint assembly features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from aluminum with a black finish, measuring a maximum length of 237 mm and a width of 288.5 mm. It includes one mounting hole with a diameter of 12.3 mm, and the ball joint has a 14 mm threaded stud for secure attachment. Rubber bushings are included to absorb vibrations and reduce noise, enhancing ride comfort. The ball joint is press-in mounted and pre-installed, eliminating the need for separate ball joint replacement. Mounting hardware is provided to facilitate a straightforward installation process.

Compatible BMW Models and Applications

This suspension control arm and ball joint assembly is compatible with a range of BMW vehicles, specifically the 645Ci, 650Ci, 650i, 745i, 745Li, 750i, 750Li, 760i, 760Li, and M6 models. It is designed to meet the suspension requirements of these vehicles, ensuring proper fitment and function.

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 bent control arms affecting wheel alignment
• Vibration and noise from deteriorated suspension components
• Loose or faulty ball joint connections impacting vehicle handling

Installation Notes and Tips

Before installation, verify compatibility with your specific BMW model and year. The assembly comes pre-greased and includes mounting hardware, simplifying the replacement process. Use proper tools to press out the old ball joint if necessary, although this assembly includes a pre-installed ball joint. Torque all mounting bolts to manufacturer specifications to ensure safety and performance. It is recommended to have a professional alignment performed after installation to maintain proper suspension geometry.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 520-937 suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure fit and function. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.