Genuine OEM Volkswagen Flywheel, part number 03F105266. The flywheel is a heavy rotating disc attached to the crankshaft, serving to smooth out power pulses from the engine and provide a surface for the clutch to engage. It is located at the rear of the crankshaft. This flywheel is made of high-strength steel for durability. Genuine OEM flywheels are precision-balanced to minimize vibration and ensure smooth engine operation and clutch engagement.