Dorman 520-556 Suspension Control Arm and Ball Joint Assembly - Front Right Lower Rearward

Durable Suspension Control Arm and Ball Joint Assembly for BMW X3

The Dorman 520-556 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance for your BMW X3. Designed with quality materials and pre-installed components, this assembly offers a reliable replacement solution for light suspension applications.

• Pre-greased ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Iron control arm with black finish for corrosion resistance
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Compatible with BMW X3 suspension systems requiring a light suspension grade

Product Features and Specifications

This Dorman suspension control arm and ball joint assembly (part number 520-556) is constructed from durable iron using casting and forging methods to ensure strength and longevity. The assembly comes pre-greased, eliminating the need for initial lubrication, and includes rubber bushings to absorb road vibrations and reduce noise. The ball joint is press-in mounted and features a threaded stud with a 14 mm diameter 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 straightforward installation.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is specifically compatible with BMW X3 models requiring a light suspension grade component. It is designed to replace worn or damaged control arms and ball joints, restoring proper suspension geometry and vehicle handling.

• Corrects suspension misalignment and uneven tire wear
• Eliminates clunking or knocking noises from front suspension
• Restores steering responsiveness and stability
• Addresses worn bushings causing vibration or looseness
• Replaces damaged ball joints affecting wheel movement

Installation Notes and Tips

Installation of the Dorman 520-556 control arm and ball joint assembly should be performed by a qualified technician using appropriate tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary during assembly. Ensure all mounting hardware is torqued to manufacturer specifications. This part is not adjustable, so alignment should be checked and corrected after installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 520-556 suspension control arm and ball joint assembly undergoes rigorous quality control to ensure durability and performance. This product includes a limited warranty covering defects in material and workmanship under normal use conditions.