The Derale 17117 is a 17" mechanical cooling fan finished in black, designed for standard-rotation fan-clutch applications. It mounts on a thermal fan clutch so the fan engages for strong airflow when the engine is hot and freewheels when cool, which reduces drag, noise, and power loss compared with a fixed fan. It is a universal mechanical fan for standard (clockwise) rotation engines.
Specifications:
- Type: mechanical cooling fan for fan-clutch applications
- Diameter: 17"
- Rotation: standard (clockwise)
- Finish: black
- Mounting: installs on a thermal fan clutch
- Part number: 17117
FAQ
What is the Derale 17117 fan?
It is a 17" black mechanical cooling fan for standard-rotation fan-clutch setups.
How does it mount?
It installs on a thermal fan clutch, which engages the fan when hot and lets it freewheel when cool.
What rotation does it require?
It is for standard (clockwise) rotation engines.

