Cooling Flex Fan, 17-1/4" Diameter x 2-3/8" Depth, 6 Blade, Standard Rotation, Stainless Steel Blade With Black Hub, Up To 10000 RPM

Heavy Duty Flex Fans provide maximum airflow at low RPMs when the vehicle speed provides little or no airflow through the radiator. At higher RPMs, the vehicle speed provides ample airflow and the fan blades flatten out to minimize engine loading, increasing Horsepower and mileage.