Moog RK643680 Suspension Control Arm - Front Left Lower

Premium Front Left Lower Control Arm

The Moog RK643680 is a premium suspension control arm for the front left lower position. It is engineered for structural strength and corrosion protection, making it a direct-fit suspension replacement for select Lexus applications.

Compatible with Lexus RC350, IS300, IS350, RC300, IS250, GS350, and GS300 applications, this control arm supports precise front suspension geometry and dependable road feel. The RK643680 is built for drivers replacing worn OE-style suspension components on Lexus models from 2006 through 2024.

Key Features

• Premium-grade suspension control arm for the front left lower position
• Engineered for structural strength in demanding front suspension use
• Corrosion protection helps support long-term durability
• Direct replacement for select Lexus front suspension applications
• Moog RK643680 fitment covers multiple Lexus sedan and coupe platforms

Detailed Description

Moog RK643680 is a premium suspension control arm designed for foreign and domestic nameplates, with this application focused on Lexus front left lower suspension service. It is a practical replacement when restoring front-end alignment stability, steering response, and suspension control on vehicles such as the Lexus IS350, IS250, GS350, RC350, RC300, and IS300. This part cross-references Dorman - OE Solutions 522-199 for the same application.

Use the RK643680 when servicing the front left lower control arm on 2006-2024 Lexus models listed in the fitment data. The part number RK643680 is also a useful reference when sourcing a premium OE-style suspension control arm for Lexus front suspension repair.

What It Helps Address

• Front-end looseness or wandering caused by a worn lower control arm
• Uneven tire wear related to suspension geometry issues
• Clunking or knocking from the front left lower suspension area
• Steering instability during braking or cornering
• Restoration of proper front suspension control on Lexus RC350, IS350, and related models

Installation Notes and Tips

Install RK643680 on the front left lower suspension position only for the listed Lexus applications. After replacement, perform a professional wheel alignment to verify suspension geometry and steering wheel centering. Confirm vehicle year, model, and position before installation, especially on Lexus IS250, GS350, and RC-series applications.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection. RK643680 is a premium-grade suspension component built for service on select Lexus front suspension applications.