Dorman 521-587 Suspension Control Arm and Ball Joint Assembly - Rear Left Upper Rearward

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-587 suspension control arm and ball joint assembly is designed specifically for BMW X5 and X6 models. This pre-greased, aluminum control arm with integrated ball joint offers a reliable replacement solution for light suspension applications.

• Pre-greased for immediate use
• Includes rubber bushings for vibration dampening
• Aluminum control arm with black finish
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm
• Single mounting hole with 12.3 mm diameter
• Light suspension grade type suitable for regular driving conditions

Detailed Product Description

This Dorman suspension control arm and ball joint assembly (part number 521-587) is engineered for BMW X5 and X6 vehicles requiring a light suspension grade replacement component. The control arm is constructed from durable aluminum using casting and forging methods, providing a balance of strength and weight savings. It features a black finish that resists corrosion and wear. The assembly comes pre-greased, eliminating the need for additional lubrication during installation.

The ball joint is press-in mounted and includes a threaded stud with a 14 mm thread diameter, ensuring secure attachment and compatibility with the vehicle’s suspension system. Rubber bushings are included to reduce noise and absorb road vibrations, enhancing ride comfort. The control arm is designed with a single mounting hole measuring 12.3 mm in diameter, matching OEM specifications for proper fitment.

Common Applications and Problem Resolution

• Replacement of worn or damaged suspension control arms on BMW X5 and X6
• Elimination of suspension noise caused by deteriorated bushings
• Restoration of proper wheel alignment and handling performance
• Correction of ball joint wear leading to steering instability
• Addressing suspension component fatigue from regular driving conditions

Installation Notes and Tips

Before installation, verify compatibility with your specific BMW X5 or X6 model year. The assembly comes pre-greased, so additional lubrication is not required. Use appropriate tools to press in the ball joint securely and torque mounting hardware to manufacturer specifications. Inspect surrounding suspension components during installation to ensure overall system integrity.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-587 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. Please refer to Dorman’s warranty policy for specific coverage details.