Genuine OEM Volkswagen Exhaust Manifold, part number 03G253010. This manifold collects exhaust gases from the engine cylinders and directs them to the turbocharger and exhaust system. It is located at position 1A in the diagram. The manifold has a length of 0.35 m. Genuine OEM exhaust manifolds are cast with precise port geometry to optimize exhaust flow and durability.