Genuine OEM Volkswagen Wax Underseal, part number D316000A1. This product applies a protective wax layer to the underbody to prevent rust and damage from road elements. It is located in the underbody assembly, indicated by position 34 on the diagram. Weighing 0.374 kg, it provides effective protection. Genuine OEM underseal is critical for preventing corrosion and extending the lifespan of your vehicle's chassis.