Genuine OEM Volkswagen Connecting Pipe, part number 028131521AS. This pipe connects the exhaust gas recirculation (EGR) valve to the intake manifold, facilitating the controlled recirculation of exhaust gases to reduce NOx emissions. It is designed for precise fitment and durability under high-temperature exhaust conditions. Genuine OEM pipes ensure the correct internal diameter and flow characteristics required for effective emissions control and engine operation.