Genuine OEM Volkswagen Exhaust Recirculation Vacuum Hose, part number 03G131055AJ. This molded hose assembly is specifically designed to transmit vacuum pressure to components of the exhaust gas recirculation (EGR) system. It ensures precise control of exhaust gas flow back into the engine, which is vital for reducing harmful emissions and maintaining engine efficiency. Genuine OEM hoses guarantee correct routing, material integrity, and resistance to exhaust heat and vacuum fluctuations.