Genuine OEM Volkswagen Freewheel Gearbox, part number 02B911335A. This component is part of the starter motor assembly and functions as a one-way clutch. It allows the starter motor's pinion gear to engage with and spin the engine's flywheel during starting, and then disengages automatically once the engine starts running, preventing the engine from driving the starter motor at high speeds. This protects the starter motor from damage. Manufactured to strict OEM standards for precise engagement and reliable operation.