Dorman 521-073 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly for Mini Cooper

The Dorman 521-073 suspension control arm and ball joint assembly is engineered specifically for Mini Cooper models. Designed with a steel control arm and pre-greased ball joint, this assembly provides reliable suspension performance and precise fitment for your vehicle.

• Pre-greased ball joint for immediate use
• Steel control arm with black finish for corrosion resistance
• Bolt-in ball joint with threaded stud (14 mm thread diameter)
• Includes mounting hardware for straightforward installation
• Light suspension grade type suitable for regular driving conditions
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm
• Rubber and steel bushings included for durability and vibration control
• Single mounting hole with 12.3 mm diameter
• Ball joint installed and ready to mount

Product Details and Specifications

This Dorman suspension control arm and ball joint assembly (part number 521-073) is constructed from forged and cast steel, providing strength and longevity for Mini Cooper vehicles. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. The ball joint features a bolt-in mounting type with a threaded stud, ensuring secure attachment and compatibility with the vehicle's suspension system. Rubber and steel bushings are incorporated to reduce noise and absorb road vibrations, enhancing ride quality. The control arm is finished in black to resist corrosion and maintain appearance over time.

Compatible Vehicles and Applications

This control arm and ball joint assembly is compatible with Mini Cooper models, designed to meet the suspension requirements of these vehicles. It is intended for light suspension grade use, making it suitable for standard driving conditions rather than heavy-duty or off-road applications.

• Replaces worn or damaged control arms causing poor handling
• Addresses ball joint wear leading to steering looseness or noise
• Corrects suspension misalignment issues
• Eliminates vibration and uneven tire wear caused by faulty bushings
• Restores proper suspension geometry for improved vehicle stability

Installation Notes and Tips

The Dorman 521-073 assembly includes all necessary mounting hardware for installation. Since the ball joint is pre-installed and pre-greased, installation time is reduced. Ensure the mounting hole (12.3 mm diameter) aligns correctly with the vehicle’s frame. Use proper torque specifications for the bolt-in ball joint and control arm mounting to maintain safety and performance. This part is not adjustable, so verify fitment before installation.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-073 control arm and ball joint assembly undergoes rigorous quality control to ensure durability and reliable performance on Mini Cooper vehicles. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.