Dorman 521-111 Suspension Control Arm and Ball Joint Assembly - Rear Left Upper Rearward

Durable Suspension Control Arm and Ball Joint Assembly for BMW X5

The Dorman 521-111 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance for your BMW X5. Designed with quality materials and pre-greased components, this assembly ensures reliable operation and long service life.

• Pre-greased ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Steel control arm with casting/forged construction
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Compatible with BMW X5 models requiring a light suspension grade type

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-111) is constructed from durable steel with a black finish to resist corrosion. The assembly includes rubber bushings that help absorb road vibrations and reduce noise. The ball joint is pre-installed and pre-greased, eliminating the need for additional lubrication during installation. It features a press-in mounting type with a threaded stud for secure attachment. The control arm measures up to 288.5 mm in width and 237 mm in length, with a single mounting hole of 12.3 mm diameter. Mounting hardware is included for a complete replacement solution.

Compatible Vehicles and Applications

This Dorman suspension control arm and ball joint assembly is specifically designed for BMW X5 models. It is ideal for those seeking a direct replacement part that meets regular suspension grade requirements and maintains factory specifications.

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn control arms
• Improves steering response and vehicle handling
• Reduces uneven tire wear caused by faulty suspension components
• Addresses vibration and instability issues during driving

Installation Notes and Tips

Installation of the Dorman 521-111 control arm and ball joint assembly requires basic suspension repair tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. It is recommended to perform a wheel alignment after installation to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. This suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure fit and function. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship.