Your stock fan robs your ponys engine of up to 15 or more horsepower! Replace it with a rugged, quieter, fan equipped with an adjustable 180-240F. thermostat. Bolts to your radiator supports using sturdy brackets. With a heavy-duty motor, and 15in diameter, this unit pulls up to 2,800 cfm of air, cooling vehicles with up to 250+ HP without air and 220+ HP with air. Ultra-thin design to fit cramped locations. Reinforced glass filled polypropylene blade and plastic housing for minimized weight. Sold as a kit.