Derale 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.
Improves Performance And Mileage
Heavy Duty Steel Hubs
Durable Stainless Blades
Rated Up To 10,000 RPM
Large Surface Area Pulls More Air At Low Speeds
Reinforced Blade Construction Extends Fan Life
Limited 1 Year Warranty