Genuine OEM Volkswagen Operating Valve, part number 04E906455J. This valve is responsible for regulating the flow of fluids or gases within the engine system, playing a critical role in engine performance and emissions control. It is located on the engine block assembly. Manufactured to exact specifications, this operating valve ensures precise control and reliable operation. Genuine OEM valves are critical for maintaining the correct operating parameters of your engine, ensuring optimal performance and longevity.