Dorman 520-399 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Dorman 520-399 Control Arm Assembly

Dorman 520-399 is a direct replacement suspension control arm and ball joint assembly for specific Hyundai Tucson and Kia Sportage applications. It is built for the front left lower position and is engineered to help restore smooth ride quality, directional stability, and predictable handling.

Key Features

• Direct replacement for the original equipment control arm and ball joint assembly
• Fits 2010-2013 Hyundai Tucson, front left lower
• Fits 2011-2013 Kia Sportage, front left lower
• Steel stamped control arm with black finish
• Ball joint included and installed
• Pre-greased for initial service
• Rubber bushings included
• Bolt-in ball joint mounting with pinch bolt stud type
• Regular grade, light suspension application

Detailed Description

This Dorman suspension control arm assembly is built to match the original equipment layout on the listed Hyundai Tucson and Kia Sportage front left lower applications. The stamped steel arm, rubber bushings, and installed ball joint work together to support consistent suspension movement and steering response. Dorman 520-399 is evaluated to help maintain ride control and directional stability after replacing a worn or damaged OE arm.

This part cross-references Delphi TC3016 for the same application.

Common Problems It Can Help Address

• Clunking or knocking from a worn lower control arm
• Loose steering feel caused by worn ball joint or bushings
• Uneven tire wear related to suspension wear
• Front-end instability during braking or cornering
• Excessive play in the front left lower suspension

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and front left lower position before installation. This assembly is pre-greased and includes the ball joint and bushings, but mounting hardware is not included. Because suspension components affect alignment and steering geometry, a professional alignment is recommended after replacement. Confirm the pinch bolt and bolt-in mounting style match the original setup on the vehicle.

Quality Assurance

Dorman uses an industry-focused evaluation process to validate fit, function, and suspension performance for direct replacement parts like 520-399. The goal is to restore OE-style operation on the specified Hyundai Tucson and Kia Sportage applications.