Dorman 521-204 Suspension Control Arm and Ball Joint Assembly - Rear Left Upper or Rear Right Upper

Dorman 521-204 Rear Control Arm Assembly

Dorman 521-204 is a direct replacement suspension control arm and ball joint assembly for specific Honda Accord and Acura TSX applications. It is built to restore stable rear suspension geometry, smooth ride quality, and predictable handling when the original arm shows wear.

• Direct replacement for the original equipment design
• Pre-greased assembly for ready-to-install service
• Steel stamped control arm with black finish
• Ball joint is installed and uses a press-in mounting design
• Rubber bushings included for suspension isolation
• Mounting hardware included
• Light-duty suspension grade construction

Fitment and Application

Compatible with 2013-2017 Honda Accord, rear right upper, and 2009-2014 Acura TSX, rear left upper. This Dorman 521-204 control arm assembly is a fitment-specific replacement for rear suspension service on these vehicles, including Honda Accord rear right upper and Acura TSX rear left upper applications.

• Fits 2013-2017 Honda Accord, rear right upper
• Fits 2009-2014 Acura TSX, rear left upper

Detailed Product Overview

This suspension control arm and ball joint assembly is engineered as an OE-style replacement for the original part on the listed vehicles. The stamped steel arm, rubber bushings, and installed ball joint are selected to support consistent suspension movement and directional stability. Dorman 521-204 is pre-greased, includes the ball joint already installed, and uses a threaded ball joint stud with a press-in mounting style for service on the rear suspension.

This part cross-references MOOG Chassis Products RK623091 for the same application.

Common Problems This Part Can Address

• Clunking or knocking from worn rear suspension joints
• Loose or unstable rear-end handling
• Uneven tire wear caused by worn control arm bushings or ball joint wear
• Excessive suspension play during braking or cornering
• Restoring rear alignment stability after component wear

Installation Notes and Tips

Inspect the surrounding suspension components, fasteners, and alignment settings before installation. Because this assembly uses a press-in ball joint design and includes rubber bushings, proper installation procedures and a post-repair alignment are recommended after replacement. Verify the vehicle position carefully before ordering, since this part is listed for rear right upper and rear left upper applications only.

Quality Assurance

Dorman designs this replacement assembly using an industry-focused evaluation process to help deliver smooth ride characteristics, directional stability, and predictable suspension response on the specified Honda Accord and Acura TSX applications.