Genuine OEM Audi Water Drain Valve, part number 4L0819419. This valve is designed to facilitate the controlled drainage of water from specific areas of the vehicle's underbody, preventing water accumulation that could lead to corrosion or damage. It is typically located in underbody cavities or drainage channels. Weighing 0.019 kg, this genuine OEM valve ensures proper sealing when closed and efficient drainage when open, maintaining the vehicle's structural integrity and preventing water ingress.