Derale 17017 - Derale Heavy Duty Flex Fans
Derale #259-17017
Heavy Duty Flex Fan
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Derale Heavy Duty Flex Fans provide maximum airflow at low RPMs when the vehicle speeds provide little to 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. Fan spacer sold separately. Features & Benefits:
