Moog RK643555 Suspension Control Arm - Rear Upper Rearward

Moog RK643555 Rear Upper Rearward Control Arm

Moog RK643555 is a premium suspension control arm engineered for structural strength and corrosion protection. It is built for rear upper rearward applications on select BMW models, with OE-standard fitment noted for the integrated control arm and ball joint assembly.

Key Features

• Premium-grade suspension control arm for rear upper rearward placement
• Engineered for structural strength in demanding BMW rear suspension applications
• Corrosion protection helps support long-term durability
• OE-standard fitment notes for the control arm and ball joint assembly
• Fits a wide range of BMW 2 Series, 3 Series, and 4 Series models

Detailed Description

Moog RK643555 is a rear upper rearward suspension control arm for BMW vehicles, including 2012-2020 BMW 320i, 328i, 330i, 340i, 428i, 435i, M235i, M240i, and related xDrive and Gran Coupe applications. This part number, RK643555, is listed for rear upper rearward use and is built to meet the demands of foreign and domestic nameplates with a premium construction focus. This part cross-references Dorman - OE Solutions 526-256 and Mevotech Supreme CMS101345 for the same application.

What This Part Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from the rear suspension area
• Uneven rear tire wear caused by worn suspension geometry
• Excessive play in the rear upper rearward control arm assembly
• Restoration of proper rear suspension alignment on BMW applications

Installation Notes and Tips

Verify the rear upper rearward position before ordering and match the vehicle by year, model, and drivetrain. Confirm fitment for your BMW 230i, 330i, 430i, 440i, 320i, 328i, 335i, 428i, 435i, M235i, or M240i application using the exact catalog listing. After installation, a wheel alignment is recommended to confirm suspension geometry.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection. RK643555 is listed as a premium-grade suspension component for BMW rear suspension service and replacement.