Genuine OEM Audi Turbocharger Oil Return Line, part number 03G145736F. This component is responsible for returning hot oil from the turbocharger assembly back to the engine's oil pan, ensuring proper lubrication and cooling of the turbo. It is typically located between the turbocharger and the engine block. Constructed from durable metal, this line weighs 0.062 kg and measures 0.13m x 0.05m x 0.025m. Using a genuine OEM oil line ensures precise fitment, correct routing, and resistance to high temperatures and oil pressure, preventing leaks and maintaining turbocharger longevity.