Dorman 521-175 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-175 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet and GMC trucks and SUVs. Designed specifically for light suspension grade applications, this assembly ensures proper alignment and smooth handling for vehicles like the Chevrolet Blazer and GMC Yukon.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete replacement
• Bolt-in ball joint with threaded stud for secure fitment
• Constructed from durable iron with a black finish for corrosion resistance
• Compatible with Chevrolet Blazer, K1500 Suburban, K2500, K2500 Suburban, K3500, Tahoe, and GMC Yukon models

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 521-175) is designed with a casting/forged iron control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to absorb road vibrations and reduce noise, while the ball joint is installed and ready to bolt in using the included mounting hardware. The ball joint features a 14 mm threaded stud and a 12.3 mm mounting hole diameter, ensuring a secure and precise fit.

Compatible Vehicles and Applications

This Dorman suspension control arm and ball joint assembly is compatible with a range of Chevrolet and GMC models, including:

• Chevrolet Blazer
• Chevrolet K1500 Suburban
• Chevrolet K2500 and K2500 Suburban
• Chevrolet K3500
• Chevrolet Tahoe
• GMC Yukon

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing poor handling
• Loose or failing ball joints leading to steering instability
• Excessive suspension noise or vibration
• Misalignment resulting in uneven tire wear
• Corroded or weakened control arm structure

Installation Notes and Tips

The Dorman 521-175 assembly is designed for straightforward bolt-in installation with included mounting hardware. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary during assembly. Ensure proper torque specifications are followed for mounting bolts and ball joint stud to maintain safety and performance. This part is not adjustable, so alignment should be checked after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for durability and fitment. The 521-175 control arm and ball joint assembly undergoes rigorous quality control to ensure reliable performance. Please refer to Dorman's warranty policy for specific coverage details.