Genuine OEM Audi Turbocharger Oil Return Line, part number 07K145735G. This essential component is responsible for safely returning hot lubricating oil from the turbocharger assembly back to the engine's oil pan. It features a combination of durable metal flanges and a flexible, reinforced hose section, designed to withstand high temperatures and oil pressure. Weighing approximately 0.174 kg, this line ensures proper oil circulation for turbocharger longevity. Using a genuine OEM oil return line guarantees the correct routing geometry, material resistance to heat and oil, and leak-free connections, preventing oil leaks and potential turbocharger damage.