Dorman 521-989 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-989 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance. Designed with a robust iron control arm and pre-installed ball joint, this assembly suits light suspension grade applications for reliable vehicle handling.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for vibration dampening
• Press-in ball joint with threaded stud for secure fitment
• Constructed from durable iron with a black finish
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Single mounting hole with 12.3 mm diameter

Product Features and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-989) features a casting/forged iron control arm designed for light suspension grade use. The assembly comes pre-greased, eliminating the need for immediate lubrication after installation. Rubber bushings are included to absorb road vibrations and improve ride quality. The ball joint is press-in mounted with a threaded stud measuring 14 mm in diameter, ensuring a secure and reliable connection. The control arm is finished in black to resist corrosion and wear. This assembly includes mounting hardware and features one mounting hole with a diameter of 12.3 mm, facilitating proper alignment and fitment.

Compatible Vehicles and Applications

This control arm and ball joint assembly is compatible with various light suspension grade vehicles, including select models of Ford, Chevrolet, and Dodge trucks and SUVs. It is designed to replace worn or damaged suspension components to restore proper steering geometry and suspension function. The Dorman 521-989 is suitable for vehicles requiring a regular grade control arm with a maximum length of 237 mm and width of 288.5 mm.

Common Suspension Issues Addressed

• Excessive play or looseness in the front suspension
• Uneven tire wear caused by misaligned control arms
• Clunking or knocking noises during steering or over bumps
• Vibration or poor handling due to worn bushings
• Steering instability or wandering on the road

Installation Notes and Tips

Before installation, verify the part number 521-989 matches your vehicle’s specifications. The assembly comes pre-greased and includes mounting hardware, simplifying the installation process. Use proper tools to press in the ball joint if removal or replacement is necessary. Ensure all mounting bolts are torqued to manufacturer specifications to maintain suspension integrity and safety.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-989 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation for exact warranty terms.