Genuine OEM Audi Engine Vacuum Hose, part number 4L0131055C. This hose is engineered to transmit vacuum pressure to various engine components, playing a vital role in systems such as brake boosting, emissions control, or turbocharger regulation. It connects directly to the vacuum reservoir and other related engine parts. Weighing only 0.0137 kg, this hose is made from durable, flexible materials designed to resist engine bay conditions. Using genuine OEM hoses ensures correct routing geometry and material resistance to vacuum and temperature fluctuations, critical for engine performance and reliability.