Genuine OEM Audi Intake System Hose Line, part number 079131051D. This line is designed to transport air within the engine's intake system, facilitating proper airflow for combustion. It is typically located within the engine bay, connecting various intake components. Constructed from durable, flexible plastic, it is engineered to withstand engine bay temperatures and pressures. Choosing a genuine OEM hose ensures correct routing, secure connections, and long-term reliability for your vehicle's intake system.