Genuine OEM BMW valve cover bolt, part number 11127568809. This bolt is engineered to fasten the valve cover to the cylinder head, ensuring the gasket is compressed evenly to prevent oil leaks. It features an integrated washer/seal design to maintain a tight connection under engine heat and vibration. Genuine OEM bolts are manufactured to precise tensile strength specifications, which is critical for maintaining the correct torque load on the valve cover assembly.