Genuine OEM Audi Cylinder Head Check Valve, part number 06H103175B. This precision component is designed to regulate the flow of fluid or gas within the cylinder head, ensuring proper lubrication or pressure management. It is installed directly into the cylinder head assembly. Featuring a durable metal construction and a sealing O-ring, it maintains critical engine operating conditions. Choosing genuine OEM ensures exact calibration and material integrity for optimal engine performance and longevity.