Dorman 521-025 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-025 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet and Pontiac vehicles. Designed specifically for models like the Cobalt, G4, G5, HHR, and Pursuit, 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 setup
• Constructed from forged aluminum for strength and corrosion resistance
• Bolt-in ball joint with pinch stud type for secure mounting
• Compatible with light suspension grade applications

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is designed with a casting/forged aluminum control arm that offers durability while maintaining a lightweight profile. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce vibration and noise, enhancing ride comfort. The ball joint is installed and features a bolt-in mounting type with a pinch stud, ensuring a secure fit. Mounting hardware is provided, and 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.

Compatible Vehicles and Applications

This Dorman 521-025 suspension control arm and ball joint assembly is compatible with various Chevrolet and Pontiac models, including the Chevrolet Cobalt, Pontiac G4, G5, HHR, and Pursuit. It is designed for light suspension grade use, making it suitable for regular driving conditions and daily use.

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 issues affecting vehicle handling
• Corrosion or fatigue in original control arm components

Installation Notes and Tips

Installation of the Dorman 521-025 assembly requires basic suspension knowledge and tools. Since the part comes pre-greased and includes mounting hardware, it simplifies the replacement process. Ensure the vehicle is securely lifted and supported before removing the old control arm. Torque all bolts to manufacturer specifications and verify alignment after installation to maintain proper handling characteristics.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards. The 521-025 suspension control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.