Genuine OEM Audi Gearbox Oil Cooling Line, part number 8K0317817DM. This essential component circulates oil for cooling and pressure within the gearbox, maintaining optimal operating temperatures and hydraulic function. It is a metal line designed for durability and precise routing within the transmission system. Choosing a genuine OEM line ensures correct routing geometry, pressure resistance, and material integrity, critical for the long-term health of your gearbox.