Genuine OEM Audi Engine Vacuum Line, part number 057131386C. This essential component is part of the engine's vacuum system, responsible for carrying vacuum pressure to various actuators, sensors, and control valves that manage engine operations and emissions. It is a pre-formed hose designed for specific routing within the engine bay. Constructed from durable, flexible materials, it maintains airtight integrity under engine heat and vibrations. With a length of approximately 0.52 meters, it is engineered for precise fitment. Using a genuine OEM vacuum line ensures correct routing, proper sealing, and resistance to degradation, which are critical for maintaining engine performance, fuel efficiency, and emissions compliance.