Genuine OEM Volkswagen Exhaust Pipe With Catalyst, part number 7T0254400AX. This part connects the engine's exhaust manifold to the rest of the exhaust system and contains a catalytic converter to reduce harmful emissions. It is located at the front of the exhaust system, as indicated by position 1 on the diagram. This part weighs 4.612 kg. Manufactured to precise specifications for optimal performance and emissions control.