Dorman 521-105 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Reliable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-105 suspension control arm and ball joint assembly is engineered for precise fitment on select Toyota and Scion models. Designed to restore proper suspension function, this assembly is pre-greased and includes all necessary mounting hardware for a straightforward installation.

• Pre-greased control arm and ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Steel construction with casting/forged control arm type
• Press-in ball joint with threaded stud for secure mounting
• Compatible with Toyota Prius C, Yaris, and Scion xD models

Durable Construction and Design Features

This suspension control arm assembly features a steel control arm with a black finish, providing durability and corrosion resistance. The assembly includes rubber bushings that help absorb road vibrations and reduce noise. The ball joint is press-in mounted and comes pre-installed with a threaded stud, ensuring a secure connection to the vehicle’s suspension system. With a single mounting hole measuring 12.3 mm in diameter, the control arm is designed for a precise fit. The assembly is not adjustable and is classified as a light suspension grade type, suitable for regular driving conditions.

Compatible Vehicles and Part Number Details

The Dorman 521-105 control arm and ball joint assembly is compatible with the following vehicles: Toyota Prius C, Toyota Yaris, and Scion xD. This part number ensures a direct replacement for worn or damaged suspension components on these models, maintaining proper alignment and handling characteristics.

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 vibrations
• Misalignment issues affecting vehicle handling
• Corrosion or structural damage to original control arm

Installation Notes and Tips

Installation of the Dorman 521-105 assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure all mounting hardware is tightened to manufacturer torque specifications. This assembly is designed for direct bolt-on replacement without adjustment, simplifying the installation process.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards. The 521-105 assembly undergoes rigorous quality control to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.