Dorman 520-140 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-140 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. Designed specifically for models like the Blazer, S10, Jimmy, and Sonoma, this assembly ensures proper suspension function and vehicle stability.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings and mounting hardware for a complete installation
• Steel construction with casting/forged control arm for strength and durability
• Bolt-in ball joint with threaded stud for secure mounting
• Compatible with light suspension grade applications

Product Features and Specifications

This suspension control arm and ball joint assembly (part number 520-140) features a black steel control arm measuring up to 288.5 mm in width and 237 mm in length. The assembly includes a pre-installed ball joint with a 14 mm threaded stud and a 12.3 mm mounting hole diameter. Rubber bushings are included to absorb vibrations and provide a smoother ride. The bolt-in ball joint mounting type simplifies installation without the need for additional grease fittings.

Compatible Vehicles and Applications

This Dorman control arm and ball joint assembly is compatible with a range of Chevrolet, GMC, Isuzu, and Oldsmobile models, including the Chevrolet Blazer, S10, S10 Blazer, GMC Jimmy, S15, S15 Jimmy, Sonoma, Bravada, and Hombre. It is designed for light suspension grade use, making it suitable for regular driving conditions and light-duty applications.

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 vibration
• Misalignment issues affecting vehicle handling
• Corroded or weakened control arm components

Installation Notes and Tips

The Dorman 520-140 assembly comes with all necessary mounting hardware for a straightforward bolt-in installation. Since the ball joint is pre-installed and pre-greased, no additional lubrication is required during installation. 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 fit and function. The 520-140 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.