Dorman 521-163 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Durable Suspension Control Arm and Ball Joint Assembly for BMW X5 and X6

The Dorman 521-163 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance for BMW X5 and X6 models. Designed with quality materials and pre-greased components, this assembly ensures reliable operation and long service life.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Constructed from durable iron with a black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with BMW X5 and X6 suspension systems

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-163) is designed with a casting/forged iron control arm that 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 pre-installed and features a 14 mm threaded stud with a press-in mounting type, ensuring a secure fit. Mounting hardware is included, and the control arm has one mounting hole with a diameter of 12.3 mm. This assembly is classified as a light suspension grade type, suitable for regular driving conditions.

Compatible Vehicles and Applications

This Dorman suspension control arm and ball joint assembly is compatible with the following BMW models:

• BMW X5
• BMW X6

It is designed to replace worn or damaged control arms and ball joints, restoring proper suspension geometry and vehicle handling.

Common Issues Addressed by This Assembly

• Excessive suspension noise or clunking during driving
• Uneven tire wear caused by misaligned suspension components
• Loose or unstable steering feel
• Vibration or shaking in the front suspension
• Worn bushings or ball joints leading to poor handling

Installation Notes and Tips

Installation of the Dorman 521-163 control arm and ball joint assembly requires basic suspension repair tools. Since the ball joint is pre-installed and the control arm is pre-greased, the assembly is ready for immediate installation. Ensure all mounting hardware is securely tightened to manufacturer torque specifications. It is recommended to perform a wheel alignment after installation to maintain proper suspension geometry and tire wear.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-163 suspension control arm and ball joint assembly undergoes rigorous quality control to ensure durability and performance. This product includes a limited warranty against defects in material and workmanship, providing confidence in its reliability for BMW X5 and X6 suspension repairs.