Dorman 520-791 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Forward

Durable Suspension Control Arm and Ball Joint Assembly for BMW

The Dorman 520-791 suspension control arm and ball joint assembly is engineered for reliable performance in BMW 745i, 745Li, 750i, 750Li, 760i, and 760Li models. Designed with precision, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Constructed from durable aluminum with a black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with light suspension grade requirements

Product Features and Specifications

This suspension control arm and ball joint assembly features a casting/forged aluminum control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to absorb vibrations and reduce noise, while the ball joint is installed and ready to use. The ball joint stud is threaded with a 14 mm diameter, and the mounting hole diameter is 12.3 mm, designed for a single mounting hole configuration. Mounting hardware is included to facilitate a straightforward replacement process.

Compatible BMW Models and Applications

This Dorman 520-791 control arm and ball joint assembly is compatible with the following BMW models: 745i, 745Li, 750i, 750Li, 760i, and 760Li. It is designed to meet the suspension requirements of these vehicles, providing a reliable solution for maintaining proper wheel alignment and suspension geometry.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing excessive play
• Faulty ball joints leading to steering instability or noise
• Corroded or weakened control arm structure affecting suspension integrity
• Uneven tire wear due to suspension misalignment
• Vibrations or clunking noises during driving

Installation Notes and Tips

Before installation, verify compatibility with your specific BMW model and year. The assembly comes pre-greased and includes all necessary mounting hardware, simplifying the replacement process. Use proper tools to press out the old ball joint if necessary, and torque all fasteners to manufacturer specifications. Since this control arm is non-adjustable, ensure alignment is checked and corrected after installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing dependable performance and durability. The 520-791 suspension control arm and ball joint assembly undergoes rigorous quality control to ensure fit and function. Warranty coverage details can be obtained from the product documentation or manufacturer.