Genuine OEM Volkswagen Oil Cooler, part number 09A409061. This oil cooler is an integral part of the transmission system, designed to dissipate heat from the transmission fluid. Maintaining the correct transmission fluid temperature is crucial for preventing wear, ensuring smooth gear shifts, and prolonging the life of the transmission. It is typically located in the transmission cooling circuit. As a genuine OEM part, it offers precise fitment and optimal heat exchange efficiency, ensuring reliable transmission operation.