Genuine OEM Audi Turbocharger Oil Line Adapter, part number 079145748B. This adapter is a crucial component that connects the engine's oil supply line to the turbocharger. It ensures a secure and leak-free connection, providing essential lubrication to the turbocharger's bearings. Using a genuine OEM adapter guarantees precise threading, correct material composition, and a perfect seal, which is vital for the reliable operation and longevity of the turbocharger.