Genuine OEM BMW exhaust turbo return oil line, part number 11428679020. This line facilitates the flow of oil from the turbocharger back to the engine's oil sump, ensuring proper lubrication and cooling of the turbocharger. It is designed to handle high temperatures and oil flow rates. Made from robust materials for reliability. Genuine OEM parts are critical for turbocharger longevity, ensuring correct oil flow and pressure.