Dorman 521-949 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Reliable Suspension Control Arm and Ball Joint Assembly for Hummer H3 and H3T

The Dorman 521-949 suspension control arm and ball joint assembly is engineered specifically for Hummer H3 and H3T models. Designed to restore proper suspension function, this assembly combines durable materials and pre-installed components to ensure a precise fit and reliable performance.

• Pre-greased ball joint for immediate use
• Includes rubber bushings and mounting hardware
• Aluminum control arm with black finish for corrosion resistance
• Press-in ball joint with pinch stud type installed
• Compatible with light suspension grade requirements

Durable Construction and Design Features

This Dorman suspension control arm and ball joint assembly (part number 521-949) features a casting/forged aluminum control arm that balances strength and weight savings. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce vibration and noise, while the press-in ball joint with a pinch stud type is factory installed for a secure fit. 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 to match factory specifications. 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 Hummer H3 and H3T models, designed to meet the light suspension grade type requirements of these vehicles. It is ideal for replacing worn or damaged control arms and ball joints to restore proper steering and suspension geometry.

• Eliminates suspension noise caused by worn bushings
• Restores proper wheel alignment and handling
• Replaces damaged or loose ball joints
• Improves ride quality by reducing vibration
• Addresses control arm wear and corrosion issues

Installation Notes and Tips

Installation of the Dorman 521-949 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and pre-greased, no additional lubrication is necessary. Ensure the mounting hardware included is used to secure the assembly properly. Verify torque specifications according to the Hummer H3 or H3T service manual. This part is not adjustable, so alignment should be checked and corrected after installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-949 suspension control arm and ball joint assembly undergoes rigorous quality control to ensure durability and performance. This product comes with Dorman's limited warranty covering defects in material and workmanship under normal use.