Genuine OEM Volkswagen Exhaust Valve, part number 03F109611C. This precision-engineered component is located in the cylinder head and is responsible for opening and closing to allow spent exhaust gases to exit the combustion chamber. It is a vital part of the engine's gas exchange process. Using a genuine OEM exhaust valve ensures correct material composition, heat resistance, and precise sealing, which are crucial for maintaining engine compression, performance, and emissions control.