Moog RK623855 Suspension Control Arm and Ball Joint Assembly - Front Upper

Front Upper Control Arm for BMW

The Moog RK623855 is a premium front upper suspension control arm and ball joint assembly for select BMW applications. It is built for structural strength and corrosion protection, with bushings and a ball joint included for a complete replacement of the worn upper control arm assembly.

Compatible with 2017-2024 BMW 530i, 2017-2024 BMW 530i xDrive, 2017-2024 BMW 540i xDrive, 2018-2023 BMW 530e, 2018-2023 BMW 530e xDrive, 2017-2023 BMW 540i, 2018-2019 BMW 640i xDrive Gran Turismo, 2018-2019 BMW M550i xDrive, and 2018 BMW 540d xDrive, front upper.

• Bushings included for a more complete suspension repair
• Ball joint included in the assembly
• Premium grade construction
• Engineered for structural strength
• Corrosion protection for long-term service life

Detailed Product Information

Moog RK623855 is a front upper control arm and ball joint assembly for BMW 5 Series and related models. It is intended for drivers replacing a worn upper control arm on a BMW 530i, BMW 540i, or BMW 530e platform vehicle, where precise suspension geometry and stable front-end operation are important. This part cross-references Delphi (e.g., TC6834, TC6932) for the same application.

The RK623855 part number is also referenced in OE-style interchange listings for select BMW applications, including 31106861185 and Mevotech Supreme CMS101584. For shoppers searching BMW front upper control arm replacement, BMW suspension control arm and ball joint assembly, or Moog RK623855 fitment, this part matches the listed front upper positions only.

Common Repair Reasons

• Clunking or knocking from the front suspension
• Excessive play in the upper control arm or ball joint
• Uneven tire wear caused by worn suspension components
• Steering looseness or reduced front-end stability
• Cracked or deteriorated control arm bushings

Installation Notes

Verify year, model, drivetrain, and front upper position before installation. Inspect adjacent suspension components, alignment angles, and mounting points during replacement. A professional wheel alignment is recommended after control arm service to restore proper suspension geometry.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection, making the RK623855 a durable replacement choice for foreign and domestic nameplates. The included bushings and ball joint support a complete front upper suspension repair on compatible BMW applications.