Dorman 521-941 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-941 suspension control arm and ball joint assembly is designed specifically for BMW 325xi and 330xi models. This pre-greased, iron control arm assembly offers a reliable replacement solution for light suspension grade applications, ensuring proper vehicle handling and suspension performance.

• Pre-greased for immediate installation
• Includes rubber bushings and mounting hardware
• Press-in ball joint with threaded stud for secure fitment
• Constructed from durable iron with a black finish
• Compatible with BMW 325xi and 330xi models

Detailed Product Features and Specifications

The Dorman 521-941 control arm assembly features a casting/forged iron construction that provides strength and durability for regular suspension use. It comes pre-greased, eliminating the need for additional lubrication during installation. The assembly includes rubber bushings to absorb road vibrations and reduce noise, along with mounting hardware for a complete replacement. The ball joint is press-in mounted and installed with a threaded stud measuring 14 mm in diameter, ensuring a secure and precise 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 for proper alignment.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with BMW 325xi and 330xi models. It is designed for light suspension grade use, making it suitable for standard driving conditions and helping maintain 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 vibration
• Misalignment affecting vehicle handling
• Corroded or weakened control arm structure

Installation Notes and Tips

Installation of the Dorman 521-941 control arm assembly requires basic suspension knowledge and tools. Since the part is pre-greased and includes bushings and mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before removal of the old control arm. Verify the ball joint stud threads match the vehicle specifications. After installation, a professional wheel alignment is recommended to restore proper suspension geometry and handling.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-941 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.