Moog RK623896 Suspension Control Arm and Ball Joint Assembly - Front Upper

Front Upper Control Arm for Heavy-Duty GM Trucks

Moog RK623896 is a premium suspension control arm and ball joint assembly for front upper applications on select Chevrolet Silverado 2500 HD and 3500 HD, plus GMC Sierra 2500 HD and 3500 HD models. It is built for structural strength and corrosion protection, with the ball joint and bushings included for a complete service replacement.

Key Features

• Premium-grade front upper control arm assembly
• Ball joint included for direct suspension service
• Bushings included for a more complete repair
• Engineered for structural strength
• Corrosion protection helps support long-term durability
• Fits 2020-2023 Chevrolet Silverado 2500 HD, front upper
• Fits 2020-2023 Chevrolet Silverado 3500 HD, front upper
• Fits 2020-2023 GMC Sierra 2500 HD, front upper
• Fits 2020-2023 GMC Sierra 3500 HD, front upper

Detailed Description

Moog RK623896 is a front upper suspension control arm and ball joint assembly made for heavy-duty GM pickups. It serves as a direct replacement for worn upper control arm components on 2020-2023 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2020-2023 GMC Sierra 2500 HD and Sierra 3500 HD models. This part cross-references Dorman OE Solutions 521-678 for the same application. The RK623896 part number is also useful when searching for OE-style suspension replacement parts for these Silverado HD and Sierra HD trucks.

Common Repair Uses

• Front-end looseness or wandering caused by worn upper control arm components
• Clunking or knocking from worn ball joint or bushing wear
• Uneven tire wear related to suspension geometry issues
• Restoring steering response on Silverado HD and Sierra HD trucks
• Replacing a damaged or corroded front upper control arm assembly

Installation Notes and Tips

Verify vehicle year, model, and front upper position before installation. After replacing suspension components, perform a professional wheel alignment to confirm proper geometry and tire wear settings. Inspect adjacent suspension parts, including lower control arms, tie rods, and steering linkage, for related wear while the front suspension is apart.

Quality Assurance

Moog premium control arms for foreign and domestic nameplates are engineered with structural strength and corrosion protection in mind. RK623896 is a premium-grade suspension replacement built for service on heavy-duty Chevrolet Silverado HD and GMC Sierra HD applications.