Usable to Cool Down Engine Oil, Transmission, and Rear-Differentials,Anodized for Durability and Protection. Track Use Potentially Reduces Oil Temperature up to 50°F,Helps Reducing Coolant Temperature,Extends Engine Life. The primary purpose of a transmission cooler is to keep the hydraulic fluid inside the transmission cool. A transmission cooler can help your transmission last longer. Water-cooled oil coolers are placed in the cooling water circuit, using the cooling water temperature to control the lubricant temperature. Air-cooled oil coolers consist of many cooling tubes and plates, using the airflow generated by the moving vehicle to cool the hot oil cooler core. However, air-cooled oil coolers require sufficient ventilation space and are therefore rarely used in ordinary passenger cars., Manufacturer: ATEHDEN