Dorman 520-394 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-394 suspension control arm and ball joint assembly is designed for reliable performance in Buick DTS and Cadillac Lucerne models. This pre-greased, aluminum control arm with integrated ball joint offers a direct replacement solution for light suspension applications.

• Pre-greased for immediate use without additional lubrication
• Includes rubber bushings and mounting hardware for a complete installation
• Aluminum control arm with a black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with Buick DTS and Cadillac Lucerne suspension systems

Product Features and Specifications

The Dorman 520-394 control arm assembly features a casting/forged aluminum construction, providing a balance of strength and weight savings. It includes a single mounting hole with a diameter of 12.3 mm and measures up to 288.5 mm in width and 237 mm in length. The assembly comes pre-greased and includes rubber bushings to absorb road vibrations and reduce noise. The ball joint is installed and features a 14 mm threaded stud for secure attachment. Mounting hardware is included to facilitate a straightforward replacement process. This assembly is designed for light suspension grade applications and is not adjustable.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with the following vehicles:

• Buick DTS
• Cadillac Lucerne

It is intended for use in suspension systems requiring a light suspension grade control arm with integrated ball joint, providing a direct fit replacement for worn or damaged components.

Common Issues Addressed by This Assembly

• Worn or damaged control arm bushings causing suspension noise or looseness
• Failed ball joints leading to steering instability or uneven tire wear
• Corroded or bent control arms affecting wheel alignment and handling
• Suspension components causing vibration or poor ride quality

Installation Notes and Tips

Before installation, verify compatibility with your Buick DTS or Cadillac Lucerne model year and suspension configuration. The assembly comes pre-greased and includes all necessary mounting hardware, simplifying the replacement process. Use proper torque specifications for mounting bolts and ball joint stud to ensure secure fitment. Since the control arm is not adjustable, alignment should be checked and corrected after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 520-394 control arm and ball joint assembly undergoes quality inspections to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.