Genuine OEM Volkswagen Cylinder Head Cover Line, part number 03N103493B. This corrugated plastic hose is designed to route fluids or gases from the cylinder head cover within the engine bay. It features specific connectors for a secure and leak-free connection. Weighing approximately 29 grams, it is a lightweight yet crucial component. Using genuine OEM hoses ensures correct routing geometry, material resistance to engine fluids and temperatures, and proper sealing to prevent vacuum leaks or fluid loss.