Moog RK623750 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Moog RK623750 Front Left Lower Control Arm

The Moog RK623750 is a premium suspension control arm and ball joint assembly for the front left lower position. It is built for Subaru WRX and Subaru WRX STI applications where structural strength, corrosion protection, and precise suspension geometry matter.

Key Features

• Premium-grade control arm assembly for front left lower suspension service
• Ball joint included for a complete replacement assembly
• Bushings included for direct installation on the specified application
• Engineered for structural strength and corrosion protection
• Fits 2015-2021 Subaru WRX, front left lower
• Fits 2015-2021 Subaru WRX STI, front left lower

Detailed Description

Moog RK623750 is a suspension control arm and ball joint assembly made for foreign and domestic nameplates, with this application covering 2015-2021 Subaru WRX and 2015-2021 Subaru WRX STI in the front left lower position. The premium construction supports suspension integrity while the included ball joint and bushings simplify replacement of a worn lower control arm assembly. This part number, RK623750, is a direct-fit option for drivers addressing front-end suspension wear on WRX and WRX STI models.

This part cross-references Dorman - OE Solutions 526-643 for the same application.

Common Repair Uses

• Front-end clunking or looseness from a worn lower control arm
• Uneven tire wear caused by suspension geometry issues
• Steering wander or reduced directional stability
• Ball joint play in the front left lower suspension
• Bushing wear that affects ride control and alignment retention

Installation Notes and Tips

Verify vehicle year, model, and front left lower position before installation. After replacement, perform a professional wheel alignment to restore suspension settings. Inspect adjacent suspension components, including related bushings and steering parts, for wear that could affect the repair.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection, making RK623750 a service-focused replacement for Subaru WRX and Subaru WRX STI suspension repair.