Genuine OEM Audi Turbocharger Oil Return Line, part number 06N145735C. This essential metal pipe is responsible for returning hot, lubricating oil from the turbocharger assembly back to the engine's oil pan. Proper oil return is critical for the turbocharger's cooling and long-term reliability, preventing oil coking and bearing damage. It is positioned directly on the turbocharger assembly. Weighing 0.158 kg and measuring 0.22m x 0.06m x 0.04m, this line is designed for high-temperature and pressure environments. Genuine OEM oil lines provide the exact routing, correct fittings, and material integrity to withstand extreme conditions and prevent leaks, ensuring the turbocharger receives adequate lubrication.