Moog RK643705 Suspension Control Arm - Rear Left Upper

Moog RK643705 Rear Left Upper Control Arm

Moog RK643705 is a premium suspension control arm built for the rear left upper position on select Hyundai and Kia sedans. It is engineered for structural strength and corrosion protection, making it a direct replacement choice for restoring rear suspension geometry.

Key Features

• Premium-grade suspension control arm for rear left upper placement
• Engineered for structural strength to support stable suspension performance
• Corrosion protection helps the part hold up in harsh road conditions
• Direct-fit application for select Hyundai Sonata and Kia Optima models
• Cross-references Dorman OE Solutions 526-193 and Mevotech Supreme CMS901274 for the same application

Application Details

This Moog control arm, part number RK643705, is compatible with 2016-2020 Kia Optima, rear left upper, and 2015-2016 Hyundai Sonata, rear left upper. It is a fitment-based replacement for drivers searching for a rear left upper control arm for Kia Optima or Hyundai Sonata suspension repair. The RK643705 is built as a premium replacement component for restoring proper rear suspension alignment and handling response.

What It Helps Address

• Rear suspension looseness or instability
• Uneven tire wear related to worn suspension geometry
• Clunking or knocking from the rear suspension area
• Excessive play in the rear left upper control arm assembly
• Alignment issues after wear in the original control arm

Installation Notes and Tips

Verify vehicle year, make, model, and rear left upper position before ordering. Compare the original control arm to RK643705 to confirm mounting points and geometry match the application. After installation, a professional wheel alignment is recommended to help restore correct suspension settings.

Quality Assurance

Moog positions this control arm as a premium replacement part with structural-strength engineering and corrosion protection for foreign and domestic nameplates. Part number RK643705 is built to meet the demands of everyday suspension service on the listed Hyundai Sonata and Kia Optima applications.