Heavy Duty Flex Fans

Heavy Duty Flex Fans

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. Fan spacer and nose cone kits sold separately.

• Improves Performance and Mileage
• OEM Quality Steel Hubs
• Durable Stainless Steel Blades
• Available in Standard or Reverse Rotation
• Large Surface Area Pulls More Air at Low Speeds
• Reinforced Blade Construction Extends Fan Life
• Chrome Plated or Black Powder Coated Hubs

Stainless Blade Black Hub
(Shown with optional nose cone spacer kit)

Part No.	Diameter	Rotation	Blade Depth
17013	13"	Standard	2 1/8"
17015	15"	Standard	2 3/4 "
17017	17"	Standard	2 3/8"
17018	18"	Standard	2 3/8"
17019	19"	Standard	2 3/8"
17617	17"	Reverse	2 3/8"
17618	18"	Reverse	2 3/8"
17619	19"	Reverse	2 3/8"

Polished Blade Chrome Hub
(Shown with optional nose cone spacer kit)

Part No.	Diameter	Rotation	Blade Depth
17213	13"	Standard	2 1/8"
17215	15"	Standard	2 3/4 "
17217	17"	Standard	2 3/8"
17218	18"	Standard	2 3/8"
17219	19"	Standard	2 3/8"
17817	17"	Reverse	2 3/8"
17818	18"	Reverse	2 3/8"
17819	19"	Reverse	2 3/8"