Genuine OEM Volkswagen driveshaft, part number 4E0521101G. This component is responsible for transmitting rotational power from the transmission to the final drive assembly. It is located along the central underside of the vehicle. This driveshaft is precision-balanced to minimize rotational vibration and ensure smooth power transfer. Genuine OEM driveshafts are critical for this application to maintain factory-specified tolerances, preventing premature wear on supporting bearings and drivetrain components.