Genuine OEM Volkswagen Oil Cooler, part number 028117021C. This component is part of the engine's lubrication system, designed to regulate the temperature of the engine oil. By cooling the oil, it helps to maintain optimal viscosity and prevent thermal breakdown, thereby protecting engine components from wear and damage. The oil cooler facilitates efficient heat exchange between the engine oil and the coolant. Genuine OEM oil coolers are manufactured to exact specifications to ensure proper fitment, efficient heat transfer, and reliable operation, safeguarding the engine's longevity.