Dorman 520-727 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 520-727 suspension control arm and ball joint assembly is designed specifically for BMW 735i models. This pre-greased, iron control arm with integrated ball joint offers a reliable replacement solution for light suspension grade applications.

• Pre-greased for immediate use
• Includes rubber bushings and mounting hardware
• Press-in ball joint with threaded stud
• Constructed from durable iron with black finish
• Compatible with BMW 735i suspension systems

Detailed Product Features and Specifications

This Dorman suspension control arm and ball joint assembly (part number 520-727) is engineered with a casting/forged iron control arm measuring 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 quality. The ball joint is installed and features a press-in mounting type with a 14 mm threaded stud, ensuring secure attachment and ease of installation. The control arm has one mounting hole with a diameter of 12.3 mm and comes with all necessary mounting hardware for a complete replacement.

Compatible Vehicles and Application

This control arm and ball joint assembly is compatible with BMW 735i models, providing a direct fit replacement for the original suspension components. It is designed for light suspension grade use, making it suitable for regular driving conditions and maintaining proper 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
• Suspension noise due to degraded rubber bushings
• Misalignment issues affecting vehicle handling
• Corroded or weakened control arm structure

Installation Notes and Tips

Installation of the Dorman 520-727 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and the control arm is pre-greased, no additional lubrication is necessary before installation. 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 proper suspension geometry.

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 are not provided here, Dorman typically offers limited warranties on their suspension components. Consult product documentation or the manufacturer for exact warranty terms.