Dorman 521-997 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly for Mazda 3

The Dorman 521-997 suspension control arm and ball joint assembly is designed specifically for Mazda 3 and Mazda 3 Sport models. This pre-greased, steel control arm with integrated ball joint offers reliable suspension performance and helps maintain proper wheel alignment and handling.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete assembly
• Steel control arm with casting/forged construction for durability
• Press-in ball joint with pinch stud type, installed and ready to use
• Compatible with Mazda 3 and Mazda 3 Sport models

Product Features and Specifications

The Dorman 521-997 control arm assembly features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from steel with a black finish, measuring a maximum length of 237 mm and a width of 288.5 mm. It includes one mounting hole with a diameter of 12.3 mm and comes with rubber bushings to absorb vibrations and improve ride quality. The ball joint is press-in mounted with a 14 mm thread diameter and pinch stud type, pre-installed and pre-greased to ensure smooth operation without the need for additional lubrication. Mounting hardware is included to facilitate straightforward installation.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with Mazda 3 and Mazda 3 Sport models. It is designed to replace worn or damaged control arms to restore proper suspension geometry and improve vehicle handling and safety.

• Corrects suspension misalignment and uneven tire wear
• Eliminates clunking or knocking noises from worn ball joints
• Restores steering stability and control
• Improves ride comfort by replacing deteriorated bushings
• Prevents premature suspension component failure

Installation Notes and Tips

Installation of the Dorman 521-997 control arm assembly requires basic suspension repair tools and mechanical knowledge. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure the vehicle is securely lifted and supported before removing the old control arm. Torque all mounting hardware to manufacturer specifications. Alignment check and adjustment are recommended after installation to maintain proper handling characteristics.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-997 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and performance. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.