Dorman 537-163 Lateral Arm and Ball Joint Assembly - Rear Lower Forward

Dorman 537-163 Rear Lower Forward Lateral Arm

Dorman 537-163 is a lateral arm and ball joint assembly for the rear lower forward position on select Subaru, Toyota, and Scion vehicles. It is built with a steel casting/forged control arm, rubber bushings, and a pre-greased, greaseable ball joint for direct replacement service.

Key Features

• Fits the rear lower forward suspension position on select Subaru BRZ, WRX, WRX STI, Legacy, Outback, Forester, Crosstrek, Impreza, XV, XV Crosstrek, Toyota GR86, Toyota 86, and Scion FR-S applications
• Adjusts rear toe on select applications, including -3.00 degrees to +3.00 degrees where specified
• Steel control arm with rubber bushings for OE-style suspension service
• Ball joint included and installed for simplified replacement
• Greaseable design with pre-greased ball joint and zerk fitting
• Includes control arm/ball joint, castle nut, cotter pin, and zerk fitting

Detailed Description

This Dorman rear lower forward lateral arm assembly is precision-engineered and tested as a replacement for the original equipment part on specific vehicles. Part number 537-163 is used in rear suspension applications where toe adjustment and stable lateral location are required, making it a direct-fit service part for Subaru BRZ, Toyota GR86, Subaru WRX, and related platforms. This part cross-references MOOG Chassis Products RK100124 and Mevotech Supreme CMS101324 for the same application.

Built with a forged/cast steel arm, rubber bushings, and a threaded ball joint stud with taper attachment, this assembly supports accurate suspension geometry and consistent joint service. The greaseable design and pre-greased construction help simplify maintenance after installation.

What It Helps Fix

• Rear suspension looseness or play from a worn lateral arm assembly
• Uneven rear tire wear caused by incorrect toe settings
• Clunking or knocking from a worn ball joint or bushing
• Difficulty holding rear alignment specifications after service
• Corrosion or fatigue in the original rear lower forward arm

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and rear lower forward position before ordering. This part is used on 2022-2025 Subaru BRZ and Toyota GR86, 2015-2021 Subaru WRX and WRX STI, and additional Subaru, Toyota, and Scion applications listed in the fitment data. After installation, perform a professional rear alignment and confirm toe settings match the vehicle specification.

Quality Assurance

Dorman states this assembly is precision-engineered and rigorously tested for reliable replacement performance on the listed vehicles. Part number 537-163 is built to meet the demands of rear suspension service on compatible Subaru, Toyota, and Scion applications.