Genuine OEM Audi Turbocharger Oil Return Line, part number 057145735AN. This essential pipe is responsible for returning hot, lubricated oil from the turbocharger assembly back to the engine's oil pan. Proper oil return is critical for preventing oil starvation in the turbocharger and maintaining overall engine lubrication. It is positioned to connect the turbocharger to the engine block. Weighing 0.055 kg, this line is designed for high-temperature and oil-resistant performance. Choosing a genuine OEM return line ensures correct routing, material durability, and leak-free operation, vital for turbocharger health.