Moog RK623981 Suspension Control Arm and Ball Joint Assembly - Front Upper

Front Upper Control Arm for Lexus Applications

The Moog RK623981 is a premium front upper suspension control arm and ball joint assembly for select Lexus models. It is built for structural strength and corrosion protection, with bushings and a ball joint included for a complete service replacement.

Key Features

• Premium-grade suspension control arm and ball joint assembly
• Bushings included for direct replacement service
• Ball joint included for front upper suspension repair
• Engineered for structural strength and corrosion protection
• Direct-fit application for select Lexus front upper positions

Detailed Product Overview

Moog RK623981 is a front upper control arm assembly for Lexus IS300, IS350, RC300, RC350, and GS350 applications. It is built to replace worn suspension components at the front upper position while restoring proper suspension geometry and steering response. This part cross-references Mevotech Supreme CMS861294 for the same application. The RK623981 part number is also used in OE-style replacement searches for Lexus front upper control arm service.

Common Problems This Part Can Address

• Clunking or knocking from the front suspension
• Excessive play from worn control arm bushings
• Loose or inconsistent steering feel
• Uneven tire wear caused by suspension wear
• Front-end alignment issues related to worn upper control arm components

Installation Notes and Tips

• Fits 2021-2025 Lexus IS300, Front Upper
• Fits 2021-2025 Lexus IS350, Front Upper
• Fits 2016-2024 Lexus RC300, Front Upper
• Fits 2015-2024 Lexus RC350, Front Upper
• Fits 2013-2020 Lexus GS350, Front Upper
• Verify vehicle year, model, and front upper position before ordering.
• Have the suspension inspected for related wear items and perform a wheel alignment after installation.

Quality Assurance

Moog premium control arms are engineered for foreign and domestic nameplates with attention to strength and corrosion resistance. RK623981 is a premium replacement choice for Lexus front upper suspension service.