Genuine OEM Volkswagen Cylinder Head With Valves, part number 03C103264HX. This critical engine component houses the valves and camshafts, controlling airflow into and out of the combustion chambers. It is the top part of the engine block, sealing the cylinders. The precise manufacturing and material quality of a genuine OEM cylinder head are essential for maintaining proper engine compression, preventing leaks, and ensuring optimal combustion and performance.