Dorman 521-770 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-770 suspension control arm and ball joint assembly is engineered for reliable performance on Kia Magentis and Optima models. Designed with a boxed steel control arm and pre-greased ball joint, this assembly ensures smooth suspension operation and long-lasting durability.

• Pre-greased ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Boxed steel control arm construction in black finish
• Press-in ball joint with threaded stud for secure fit
• Compatible with Kia Magentis and Optima vehicles

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-770) features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from durable steel with a boxed design, measuring up to 288.5 mm in width and 237 mm in length. It includes one mounting hole with a diameter of 12.3 mm, and the ball joint is installed with a 14 mm threaded stud for secure attachment. Rubber bushings are included to reduce vibration and noise, and all necessary mounting hardware comes with the package for straightforward installation.

Compatible Vehicles and Applications

This assembly is specifically compatible with Kia Magentis and Kia Optima models, providing a direct replacement for worn or damaged suspension components. The Dorman 521-770 part is designed to restore proper suspension geometry and improve vehicle handling and stability.

• Replaces worn or damaged control arms and ball joints
• Corrects suspension misalignment and uneven tire wear
• Eliminates clunking or knocking noises from front suspension
• Improves steering response and vehicle control

Installation Notes and Tips

Installation of the Dorman 521-770 control arm and ball joint assembly requires basic suspension repair tools. Since the ball joint is pre-installed and pre-greased, no additional greasing is necessary during installation. Ensure all mounting hardware is securely tightened to manufacturer torque specifications. It is recommended to have a professional alignment performed after installation to maintain proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-770 assembly undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship for this part.