Dorman 521-497 Suspension Control Arm and Ball Joint Assembly - Rear Left Upper Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-497 suspension control arm and ball joint assembly is designed for select BMW models, including the 525i, 530i, 535i, 745i, M5, and M6. This assembly combines a durable aluminum control arm with a pre-installed ball joint to ensure reliable suspension performance and vehicle handling.

• Pre-greased ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Aluminum control arm with casting/forged construction
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Compatible with multiple BMW models such as 528i xDrive, 550i, 645Ci, and 750Li

Detailed Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is engineered with a light suspension grade type, suitable for regular driving conditions. The control arm is constructed from aluminum, providing a balance of strength and weight savings. It features a single mounting hole with a diameter of 12.3 mm and measures up to 288.5 mm in width and 237 mm in length. The assembly includes rubber bushings to absorb vibrations and reduce noise, enhancing ride comfort. The ball joint is press-in mounted and comes pre-installed with a threaded stud, simplifying installation. Mounting hardware is included to facilitate a complete replacement.

Compatible BMW Models and Applications

This Dorman 521-497 control arm and ball joint assembly is compatible with a wide range of BMW vehicles, including:

• BMW 525i, 525xi, 528i, 528i xDrive, 528xi
• BMW 530i, 530xi, 535i, 535i xDrive, 535xi
• BMW 545i, 550i, 645Ci, 650i
• BMW 745i, 745Li, 750i, 750Li, 760i, 760Li
• BMW M5 and M6 models

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Ball joint wear leading to steering looseness or noise
• Corroded or bent control arms affecting wheel alignment
• Vibration or clunking noises from suspension components
• Uneven tire wear due to suspension component failure

Installation Notes and Tips

Installation of the Dorman 521-497 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, it reduces installation time. Ensure the vehicle is properly supported and aligned after installation. Torque all mounting hardware to manufacturer specifications. This assembly is not adjustable, so precise fitment is critical for proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-497 assembly undergoes rigorous quality control to ensure durability and performance. This product includes mounting hardware and pre-installed components to streamline replacement. Warranty coverage details can be obtained from Dorman or the product documentation to confirm terms and conditions.