Genuine OEM Volkswagen Constant Velocity Joint, part number 7P0598103B. This joint allows the drive shaft to transmit power to the wheels while accommodating suspension movement and steering angles. It is located at position 20 in the diagram. The part weighs 1.95 kg. Genuine OEM CV joints are manufactured to precise tolerances to ensure smooth power transfer and durability under extreme angles and loads, preventing premature wear and vibration.