Dorman 521-391 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Overview of Dorman Suspension Control Arm and Ball Joint Assembly

The Dorman 521-391 suspension control arm and ball joint assembly is designed specifically for Toyota Sequoia and Tundra models. This pre-greased, boxed steel control arm offers a reliable replacement solution for light suspension grade applications, ensuring proper vehicle alignment and handling.

• Pre-greased for immediate use without additional lubrication
• Includes rubber bushings for vibration dampening
• Press-in ball joint with threaded stud for secure mounting
• Constructed from durable boxed steel with a black finish
• Compatible with Toyota Sequoia and Tundra suspension systems
• Mounting hardware included for straightforward installation
• Control arm dimensions: maximum length 237 mm, maximum width 288.5 mm
• Single mounting hole with 12.3 mm diameter

Detailed Product Description

The Dorman 521-391 suspension control arm and ball joint assembly is engineered to meet the suspension needs of Toyota Sequoia and Tundra vehicles. Featuring a boxed steel control arm, this assembly provides structural strength and durability while maintaining a lightweight profile suitable for light suspension grade applications. The control arm comes pre-greased, eliminating the need for additional lubrication during installation. Rubber bushings are included to reduce noise and absorb road vibrations, enhancing ride comfort.

The ball joint is press-in mounted and includes a threaded stud with a 14 mm thread diameter, ensuring a secure and precise fit. The assembly is finished in black to resist corrosion and maintain a clean appearance. With mounting hardware included, the Dorman 521-391 simplifies the replacement process for technicians and DIY enthusiasts alike.

Common Applications and Issues Addressed

• Worn or damaged control arm bushings causing steering instability
• Loose or failing ball joints leading to uneven tire wear
• Suspension noise or clunking during driving
• Alignment problems resulting from bent or compromised control arms
• Replacement of corroded or fatigued suspension components on Toyota Sequoia and Tundra

Installation Notes and Tips

Before installation, verify compatibility with your specific Toyota Sequoia or Tundra model year. The pre-greased ball joint reduces installation time, but ensure all mounting surfaces are clean and free of debris. Use proper torque specifications for the single 12.3 mm mounting hole and ball joint stud to maintain safety and performance. Since the control arm is not adjustable, alignment should be checked and corrected after installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-391 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and reliability. While specific warranty details are not provided, Dorman typically offers limited warranties on suspension parts to cover defects in materials and workmanship.