Genuine OEM Audi Engine Vacuum Hose, part number 03L131552S. This hose is essential for transmitting vacuum pressure to various engine components, enabling proper function of systems like braking assistance, emissions control, or turbocharger regulation. It is located within the engine bay, connecting specific vacuum-operated actuators or sensors. Constructed from durable, flexible material, it measures approximately 0.47 meters in length and weighs 0.071 kg. Choosing a genuine OEM vacuum hose ensures the correct routing geometry, material resistance to engine bay temperatures and fluids, and precise pressure retention for optimal engine performance and longevity.