Dorman 521-021 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-021 suspension control arm and ball joint assembly is designed specifically for Cadillac CTS, SRX, and STS models. This pre-greased, aluminum control arm assembly offers a reliable replacement option for light suspension grade applications, ensuring proper vehicle handling and suspension performance.

• Pre-greased for immediate installation
• Includes rubber bushings and mounting hardware
• Aluminum control arm with black finish
• Press-in ball joint with threaded stud included and installed
• Compatible with Cadillac CTS, SRX, and STS models

Detailed Product Description

This Dorman suspension control arm and ball joint assembly (part number 521-021) features a durable aluminum control arm constructed through casting and forging processes, providing strength while maintaining a lightweight design. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to help absorb road vibrations and reduce noise, contributing to a smoother ride. The ball joint is press-in mounted with a threaded stud type, designed for secure attachment and reliable steering response. 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 for proper fitment.

Compatible Vehicles and Applications

This suspension control arm and ball joint assembly is compatible with the following Cadillac models:

• Cadillac CTS
• Cadillac SRX
• Cadillac STS

It is intended for light suspension grade use and is not adjustable, making it suitable for standard replacement needs on these vehicles.

Common Issues Addressed by This Assembly

• Worn or damaged control arm bushings causing poor handling
• Ball joint wear leading to steering play or noise
• Corroded or bent control arms affecting suspension alignment
• Vibration or clunking noises from suspension components
• Failed suspension components impacting vehicle stability

Installation Notes and Tips

• Pre-greased ball joint and bushings reduce installation time
• Verify mounting hole alignment and torque specifications for Cadillac CTS, SRX, or STS
• Use included mounting hardware for proper fit and secure installation
• Inspect related suspension components during replacement for wear or damage
• Professional alignment is recommended after installation

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-021 control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship.