Genuine OEM Audi Turbocharger, part number 06D145701J. This turbocharger is mounted to the exhaust manifold and is responsible for increasing engine power by forcing compressed air into the combustion chambers. It is a crucial part of the engine's intake and exhaust system. Constructed from high-temperature resistant materials for durability. Genuine OEM turbochargers are precisely balanced and calibrated for optimal performance and longevity.