Dorman 520-944 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly for BMW

The Dorman 520-944 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance for select BMW models. Designed with pre-greased components and rubber bushings, this assembly offers reliable operation for vehicles like the BMW 735i, 740i, and 850Ci.

• Pre-greased for immediate use without additional lubrication
• Includes rubber bushings and mounting hardware for a complete installation
• Iron control arm with a black finish for durability and corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with BMW 735i, 735iL, 740i, 740iL, 750iL, 840Ci, 850Ci, 850CSi, and 850i models

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is constructed from forged and cast iron, providing a sturdy foundation for suspension components. The assembly comes pre-greased and includes rubber bushings to absorb road vibrations and reduce noise. The ball joint is press-in mounted with a threaded stud featuring a 14 mm thread diameter, ensuring a secure fit. 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 to facilitate installation, although the assembly is not adjustable.

Compatible BMW Models and Applications

This Dorman 520-944 suspension control arm and ball joint assembly is compatible with a range of BMW vehicles, including the 735i, 735iL, 740i, 740iL, 750iL, 840Ci, 850Ci, 850CSi, and 850i. It is designed to meet the suspension grade type classified as light, suitable for regular driving conditions and maintaining factory suspension geometry.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Excessive suspension noise or vibrations
• Misalignment resulting in poor handling
• Corrosion or structural damage to original control arm components

Installation Notes and Tips

Installation of the Dorman 520-944 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and press-in mounted, no separate ball joint replacement is necessary. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. Although pre-greased, periodic inspection of bushings and ball joints is recommended for long-term performance.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 520-944 assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship to provide confidence in product reliability.