Genuine OEM Volkswagen oil cooler, part number 07C117037K. This component is responsible for regulating engine oil temperature by transferring heat to the engine cooling system. It is located within the engine cooling assembly as shown in the diagram. This unit is built to exact factory specifications for thermal conductivity and pressure resistance. Genuine OEM parts are essential for this application to ensure leak-free operation and maintain the precise flow rates required by the engine lubrication system.