Dorman 521-498 Suspension Control Arm and Ball Joint Assembly - Rear Right Upper Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-498 suspension control arm and ball joint assembly is engineered for precise fitment on select BMW models. Designed with durability and performance in mind, this assembly supports suspension integrity and vehicle handling for models such as the BMW 525i, 530i, and M5.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for vibration dampening
• Aluminum control arm construction for strength and corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Compatible with multiple BMW models including 528i xDrive and 750Li

Detailed Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman features a casting/forged aluminum control arm finished in black, measuring up to 288.5 mm in width and 237 mm in length. The assembly comes pre-greased, eliminating the need for initial lubrication, and includes rubber bushings to absorb road vibrations and improve ride quality. The ball joint is press-in mounted with a 14 mm threaded stud, ensuring a secure and reliable connection. The assembly includes one mounting hole with a diameter of 12.3 mm, and mounting hardware is provided to facilitate installation.

Compatible BMW Models and Applications

This Dorman 521-498 control arm and ball joint assembly is compatible with a range of BMW vehicles, including but not limited to:

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

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Loose or failing ball joints leading to steering instability
• Corroded or weakened control arm components affecting suspension geometry
• Excessive vibration or noise from suspension wear
• Alignment problems due to suspension component wear

Installation Notes and Tips

Installation of the Dorman 521-498 suspension 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, initial lubrication is not necessary. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all fasteners 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 suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-498 assembly undergoes rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on suspension parts; consult product documentation or the manufacturer for exact terms.