Genuine OEM Volkswagen Flywheel, part number 06J105266D. This component is a heavy rotating disc attached to the crankshaft, serving to store rotational energy and smooth out power delivery from the engine. It also provides a surface for the clutch to engage with. The flywheel is a critical part of the engine's rotating assembly, requiring precise balance and material strength for reliable operation. Genuine OEM parts ensure correct mass, balance, and durability for smooth and efficient engine performance.