Dorman 522-925 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 522-925 suspension control arm and ball joint assembly is designed specifically for BMW 645Ci, 650Ci, 650i, and M6 models. This pre-greased, aluminum control arm with an integrated ball joint offers a reliable replacement option for light suspension grade applications.

• Pre-greased for immediate use
• Includes rubber bushings for vibration dampening
• Aluminum control arm with casting/forged construction
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Single mounting hole with 12.3 mm diameter
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Black finish for corrosion resistance
• Mounting hardware included

Detailed Product Description

The Dorman 522-925 suspension control arm and ball joint assembly is engineered to meet the suspension needs of select BMW vehicles, including the 645Ci, 650Ci, 650i, and M6. Constructed from durable aluminum with a casting and forging process, this control arm provides 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 noise and absorb road vibrations, enhancing ride comfort.

The ball joint is press-in mounted and features a threaded stud with a 14 mm thread diameter, ensuring secure attachment and compatibility with the vehicle’s suspension system. The control arm’s black finish offers protection against corrosion, extending the part’s service life. With a single mounting hole measuring 12.3 mm in diameter, this assembly is designed for straightforward installation on compatible BMW models.

Common Applications and Problem Resolution

• Replacement for worn or damaged suspension control arms on BMW 645Ci, 650Ci, 650i, and M6
• Addresses issues with suspension noise or vibration caused by deteriorated bushings
• Restores proper suspension geometry and handling performance
• Fixes ball joint wear that can lead to steering instability
• Improves ride quality by maintaining correct suspension alignment

Installation Notes and Tips

Installation of the Dorman 522-925 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and the control arm is pre-greased, no additional lubrication is necessary during assembly. Ensure the mounting hole aligns correctly with the vehicle’s frame and suspension components. Torque all fasteners to manufacturer specifications to maintain safety and performance. It is recommended to have a professional alignment performed after installation to ensure optimal handling.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 522-925 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and reliability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their suspension parts. Consult product documentation or the manufacturer for exact warranty terms.