Genuine OEM Audi vacuum hose, part number 0P2131612H. This hose is a critical component of the engine vacuum system, responsible for routing air pressure signals to various actuators and sensors within the intake and turbocharger assembly. It is constructed from high-grade, heat-resistant rubber to withstand the demanding environment of the engine bay. Genuine OEM hoses provide the exact routing geometry and material resistance required to prevent vacuum leaks and maintain optimal engine performance.