Dorman 522-939 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly for Mazda RX-7

The Dorman 522-939 suspension control arm and ball joint assembly is designed specifically for Mazda RX-7 models, providing reliable suspension performance. This pre-greased, aluminum control arm comes with all necessary mounting hardware and rubber bushings for a straightforward installation.

• Pre-greased for immediate use without additional lubrication
• Includes rubber bushings and mounting hardware
• Aluminum control arm with a black finish for corrosion resistance
• Press-in ball joint with pinch stud type, installed and ready
• Designed for light suspension grade applications
• One mounting hole with 12.3 mm diameter for secure fitment
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm

Product Details and Specifications

The Dorman 522-939 control arm assembly features a casting/forged aluminum construction, offering a balance of strength and weight savings suitable for regular suspension use. The assembly includes a press-in ball joint with a 14 mm thread diameter pinch stud, pre-installed and pre-greased to reduce maintenance needs. Rubber bushings are included to absorb vibrations and provide a smoother ride. The black finish on the control arm helps resist corrosion and wear over time. This assembly is designed for light suspension grade applications and includes all necessary mounting hardware for a complete replacement.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with Mazda RX-7 models. It is engineered to meet the specific suspension requirements of the RX-7, ensuring proper fit and function.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Faulty ball joints leading to uneven tire wear or clunking noises
• Corroded or bent control arms affecting suspension alignment
• Excessive vibration or poor handling due to degraded suspension components
• Difficulty maintaining proper wheel alignment

Installation Notes and Tips

Installation of the Dorman 522-939 control arm assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary during installation. Ensure the mounting hole aligns correctly with the vehicle’s frame using the included hardware. Torque specifications should be followed according to Mazda RX-7 service manuals. It is recommended to have a professional alignment performed after installation to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 522-939 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. This product comes with a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for Mazda RX-7 suspension repairs.