Genuine OEM BMW engine cylinder head cover, part number 11128699195. This cover seals the top of the cylinder head, protecting internal engine components from dirt and moisture, and often houses parts of the valvetrain. It is a critical component for engine integrity and emissions control. The diagram shows it as the upper cover on the engine block. Genuine OEM cylinder head covers are manufactured from high-quality materials to withstand engine temperatures and pressures, ensuring a reliable seal.