Dorman 520-150 Suspension Control Arm and Ball Joint Assembly - Front Left Upper or Front Right Upper

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 520-150 suspension control arm and ball joint assembly is engineered for reliable performance in Chevrolet, GMC, and Hummer trucks and SUVs. Designed to meet regular suspension grade requirements, this assembly offers a pre-greased, ready-to-install solution for maintaining proper suspension geometry and vehicle handling.

• Pre-greased ball joint for immediate use
• Includes rubber bushings for vibration dampening
• Steel control arm with casting/forged construction
• Press-in ball joint with threaded stud (14 mm thread diameter)
• Compatible with Chevrolet Silverado 1500 HD, GMC Sierra 2500 HD, Hummer H2, and more
• Mounting hardware included for straightforward installation
• Control arm dimensions: max length 237 mm, max width 288.5 mm
• Black finish for corrosion resistance

Product Features and Specifications

The Dorman 520-150 control arm assembly features a steel control arm constructed through casting and forging processes, ensuring structural integrity under light suspension loads. The assembly includes rubber bushings that help absorb road vibrations and reduce noise. The ball joint is press-in mounted and comes pre-installed with a threaded stud, simplifying replacement procedures. This assembly is designed with a single mounting hole (12.3 mm diameter) and is not adjustable, maintaining factory suspension geometry. The black finish provides added protection against corrosion and wear.

Compatible Vehicles and Applications

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

• Chevrolet Avalanche 2500
• GMC Sierra 1500 HD, 2500 HD, 3500 HD (including Classic versions)
• Chevrolet Silverado 1500 HD, 2500 HD, 3500 HD (including Classic versions)
• GMC Yukon XL 2500 and Suburban 2500
• Hummer H2

Use part number 520-150 when searching for a replacement control arm and ball joint assembly for these vehicles to ensure proper fitment and performance.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Ball joint wear leading to uneven tire wear or clunking noises
• Corroded or bent control arms affecting suspension alignment
• Loose or failing ball joints compromising vehicle handling
• Vibration and noise from deteriorated suspension components

Installation Notes and Tips

Before installation, verify compatibility with your specific Chevrolet, GMC, or Hummer model using the part number 520-150. The assembly comes pre-greased and includes mounting hardware, but no grease fitting is provided. Use proper tools to press out the old ball joint if necessary, and torque mounting bolts to manufacturer specifications. Since the control arm is not adjustable, ensure alignment is checked and corrected after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for durability and fit. The 520-150 control arm and ball joint assembly undergoes rigorous quality control to ensure reliable performance. Warranty coverage details should be confirmed with the supplier or manufacturer at the time of purchase.