Genuine OEM Volkswagen Exhaust Recirculation Valve, part number 04B131501D. This valve is a critical component of the exhaust gas recirculation (EGR) system, controlling the flow of exhaust gases back into the intake manifold to reduce NOx emissions. It is typically located in the exhaust system before the intake manifold. This part is made from durable materials to withstand high temperatures and exhaust pressures, ensuring long-lasting performance and compliance with emissions standards.