Dorman 521-899 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Durable Suspension Control Arm and Ball Joint Assembly for Mazda 6

The Dorman 521-899 suspension control arm and ball joint assembly is engineered to restore proper suspension function for Mazda 6 vehicles. Designed with quality steel construction and pre-greased components, this assembly ensures reliable performance and long-lasting durability.

• Pre-greased for immediate installation and smooth operation
• Includes rubber bushings and mounting hardware for a complete replacement
• Stamped steel control arm with a black finish for corrosion resistance
• Press-in ball joint with threaded stud for secure mounting
• Compatible with Mazda 6 suspension systems requiring a light suspension grade type

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-899) is designed specifically for Mazda 6 models. The control arm is made from stamped steel, providing strength while maintaining a lightweight profile. It features 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 press-in mounted with a threaded stud of 14 mm diameter, already installed for convenience. Mounting hardware is included to facilitate a straightforward installation process.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Suspension noise or clunking during driving
• Misalignment affecting vehicle handling and safety
• Corrosion or structural damage to original control arm components

Installation Notes and Tips

Installation of the Dorman 521-899 suspension control arm and ball joint assembly should be performed by a qualified technician. Since the ball joint is pre-installed and pre-greased, it reduces installation time. Ensure all mounting hardware is torqued to manufacturer specifications. This assembly is not adjustable, so proper alignment after installation is recommended to maintain optimal suspension geometry and vehicle handling.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-899 assembly undergoes rigorous quality control to ensure durability and fitment accuracy for Mazda 6 vehicles. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your replacement part.