The Derale 19117 is a 17 inch high performance flex fan for belt-driven engine cooling. Its stainless steel flexible blades flatten out as engine rpm rises, which reduces the power the fan draws at speed while still moving strong airflow at idle and low speeds. The fan uses a black hub and turns in the standard clockwise rotation used by most V-belt and serpentine water pump setups.
Specifications:
- Type: Belt-driven flex fan
- Diameter: 17"
- Blade material: Stainless steel
- Blade style: Flexible (flex) blades
- Hub color: Black
- Rotation: Standard rotation (clockwise)
- Part number: 19117
FAQ
What size is the Derale 19117 flex fan?
It is 17 inches in diameter.
What are the blades made of?
They are stainless steel flexible flex blades.
Which rotation is this fan?
It is standard rotation, turning clockwise, for common belt-driven water pumps.
Why use a flex fan?
The flexible blades flatten at higher rpm to reduce drag and noise while still cooling well at idle and low speed.

