Genuine OEM Audi EGR Connecting Pipe, part number 059131525AK. This small, curved metal pipe is an integral part of the exhaust gas recirculation (EGR) system, responsible for linking various components such as the EGR cooler or valve. Its function is to facilitate the precise flow of exhaust gases back into the engine's intake, reducing nitrogen oxide emissions. Using a genuine OEM pipe ensures exact fitment and material integrity, which is essential for maintaining the efficiency and compliance of the vehicle's emissions control system.