Dorman 521-307 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Durable Suspension Control Arm and Ball Joint Assembly for Mitsubishi Montero

The Dorman 521-307 suspension control arm and ball joint assembly is engineered to restore precise steering and suspension performance for your Mitsubishi Montero. Designed with quality materials and pre-greased components, this assembly ensures reliable operation and long service life.

• Pre-greased for immediate use and reduced maintenance
• Includes rubber bushings for effective vibration dampening
• Steel control arm with casting/forged construction for strength
• Bolt-in ball joint with threaded stud for secure mounting
• Mounting hardware included for straightforward installation
• Compatible with Mitsubishi Montero models requiring part number 521-307

Product Features and Specifications

This suspension control arm and ball joint assembly features a light suspension grade type suitable for regular driving conditions. The control arm is constructed from durable steel with a black finish, measuring a maximum length of 237 mm and a width of 288.5 mm. It includes one mounting hole with a diameter of 12.3 mm, designed for bolt-in installation. The ball joint is pre-installed and features a 14 mm threaded stud, ensuring a secure fit. Rubber bushings are included to absorb road shocks and reduce noise, enhancing ride comfort. This assembly is not adjustable but is designed to meet OEM specifications for the Mitsubishi Montero.

Common Applications and Problem Resolution

• Restores proper suspension geometry and alignment
• Eliminates clunking or knocking noises from worn control arms
• Improves steering response and vehicle handling
• Replaces damaged or worn ball joints to maintain safety
• Addresses uneven tire wear caused by suspension issues

Installation Notes and Tips

Installation of the Dorman 521-307 control arm and ball joint assembly requires basic suspension knowledge and tools. Since the ball joint is pre-installed and the control arm is pre-greased, the assembly is ready for immediate installation. Ensure the mounting hole aligns correctly with the vehicle frame and torque all bolts to manufacturer specifications. It is recommended to perform a wheel alignment after installation to maintain optimal handling and tire wear.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards, providing reliable performance for your Mitsubishi Montero. This control arm and ball joint assembly undergoes rigorous quality checks to ensure durability and fitment accuracy. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.