Genuine OEM Volkswagen Flywheel, part number 03N105266H. The flywheel is a heavy rotating disc that stores rotational energy, smoothing out the power pulses from the engine and providing a stable connection to the transmission. It is mounted to the crankshaft and is part of the engine assembly. This flywheel has a diameter of 0.29m and a height of 0.07m, weighing 11.722kg. Genuine OEM flywheels are critical for maintaining precise balance and ensuring smooth engagement with the clutch, preventing premature wear and vibration.