Genuine OEM Volkswagen Exhaust Gas Turbocharger, part number 0XW145701A. This turbocharger forces compressed air into the engine cylinders, increasing power output and fuel efficiency. It is identified as part 1 in the diagram. This part weighs 6.892 kg. Genuine OEM turbochargers are precision-engineered with balanced rotating assemblies and exact tolerances to ensure reliable performance, optimal boost, and longevity.