Dorman 521-143 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Durable Suspension Control Arm and Ball Joint Assembly

The Dorman 521-143 suspension control arm and ball joint assembly is engineered for reliable performance in Ford Edge and Lincoln MKX vehicles. Designed with pre-greased components and included bushings, this assembly ensures smooth suspension operation and long-lasting durability.

• Pre-greased for immediate installation and reduced maintenance
• Includes rubber bushings for effective vibration dampening
• Steel control arm with casting/forged construction for strength
• Ball joint installed with a press-in mounting type and pinch stud
• Mounting hardware included for a complete replacement solution
• Compatible with Ford Edge and Lincoln MKX models
• Control arm dimensions: maximum width 288.5 mm, maximum length 237 mm

Product Features and Specifications

This suspension control arm and ball joint assembly from Dorman is designed to meet regular suspension grade requirements with a light suspension grade type. The steel control arm is finished in black and includes one mounting hole with a diameter of 12.3 mm. The ball joint features a 14 mm thread diameter and is installed for a secure fit. Rubber bushings are included to reduce noise and absorb road shocks, enhancing ride comfort. The assembly comes pre-greased, eliminating the need for additional lubrication during installation. Mounting hardware is provided to simplify the replacement process.

Compatible Vehicles and Applications

This Dorman 521-143 control arm and ball joint assembly is compatible with select Ford and Lincoln models, specifically the Ford Edge and Lincoln MKX. It is designed to replace worn or damaged suspension components, restoring proper alignment and handling characteristics.

• Corrects suspension noise and vibration issues
• Resolves uneven tire wear caused by faulty control arms
• Improves steering response and vehicle stability
• Eliminates looseness or play in the suspension system
• Restores proper ball joint function for safe operation

Installation Notes and Tips

Installation of the Dorman 521-143 assembly requires basic suspension knowledge and tools. Since the ball joint is press-in type and pre-installed, no separate ball joint installation is necessary. Ensure the mounting hole aligns correctly with the vehicle’s frame and torque all hardware to manufacturer specifications. Although the assembly is pre-greased, inspect bushings and ball joints for any damage during installation. This part is not adjustable, so proper fitment is critical for optimal suspension performance.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for durability and fitment. The 521-143 control arm and ball joint assembly undergoes rigorous quality checks to ensure reliable performance. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in your suspension repair.