Genuine OEM Volkswagen Cylinder Head, part number 06A103351P. This is the main component of the engine that houses the valves and spark plugs. It forms the seal between the cylinder block and the cylinder head, containing the combustion process. Manufactured to precise specifications for optimal engine performance and longevity. Genuine OEM cylinder heads ensure correct valve seating, precise combustion chamber volume, and proper coolant/oil passage alignment for reliable engine operation.