Genuine OEM Volkswagen flywheel, part number 0AW105317K. This component is mounted to the crankshaft to provide rotational inertia, smoothing out engine power pulses and providing a stable surface for the clutch assembly. It is a precision-balanced component essential for drivetrain operation. Genuine OEM flywheels are manufactured to exact tolerances to ensure perfect balance and vibration-free operation, which is critical for protecting the transmission and engine bearings.