Dorman 521-027 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-027 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet, Pontiac, and Saturn vehicles. Designed specifically for models like the Captiva Sport, Equinox, Torrent, and Vue, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Steel control arm with a black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with light suspension grade applications

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-027) features a forged and cast steel control arm designed to meet regular grade suspension requirements. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce vibration and noise, while the ball joint is installed and ready to use. The ball joint mounting type is press-in, with a threaded stud measuring 14 mm in diameter, ensuring a secure 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. Mounting hardware is included to facilitate a straightforward installation process.

Compatible Vehicles and Applications

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

• Chevrolet Captiva Sport
• Chevrolet Equinox
• Pontiac Torrent
• Saturn Vue

It is designed for light suspension grade use, making it suitable for regular driving conditions and maintaining proper suspension geometry and handling characteristics.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing excessive play or noise
• Faulty ball joints leading to steering instability or uneven tire wear
• Corroded or weakened control arm compromising suspension integrity
• Loose or missing mounting hardware affecting suspension alignment
• Pre-greased assembly reduces maintenance needs and improves longevity

Installation Notes and Tips

Before installation, verify vehicle compatibility with the Dorman 521-027 part number. The assembly comes pre-greased and includes all necessary mounting hardware, simplifying the replacement process. Use appropriate tools to press in the ball joint securely and torque mounting bolts to manufacturer specifications. Since the control arm is not adjustable, ensure proper alignment is performed after installation to maintain suspension geometry and vehicle handling.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for durability and fitment. The 521-027 control arm and ball joint assembly undergoes rigorous quality control to ensure reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation for exact warranty terms.