Your stock fan robs your engine of up to 15 or more horsepower! Replace it with a rugged, universal-fit fan equipped with an adjustable 180-240 degree F thermostat. Bolts to your radiator supports using sturdy brackets. With a heavy-duty motor, highly angled blades, and 15 inch 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. 12 inch, 14 inch, and 16 inch fans are reversible, mount to front or back of radiator. Ultra-thin design to fit cramped locations. Reinforced glass filled polypropylene blade and plastic housing for minimized weight. Nylon tie mounting kit included. Nominal fan size is based upon approximate overall diameter. Sold as a kit.