Derale's most efficient remote cooler yet, the Hyper-Cool Extreme is designed to outperform the competition in every aspect of its unique design. The combination of their largest and most efficient 40-row stack plate cooler equipped with an 800 CFM waterproof/dustproof electric fan makes this remote cooler the absolute best on the market. Perfect for all applications. Excelling when used in extreme duty, high performance or off road applications. Its -8AN fittings allows for simple and clean connection to your transmission or engine oil lines.