The Derale 17419 is a 19" rigid race fan with steel blades, built for maximum airflow in racing and high-heat applications. Unlike a flex fan, the rigid steel blades hold their pitch at all engine speeds, so the fan moves as much air as possible at every rpm. It is designed for reverse-rotation water pumps found on many serpentine-belt engines and is a universal mechanical fan for reverse (counterclockwise) rotation.
Specifications:
- Type: rigid race mechanical fan
- Diameter: 19"
- Blade material: steel
- Rotation: reverse (counterclockwise)
- Mounting: bolts to a reverse-rotation water pump fan flange
- Use: racing and high-heat, maximum airflow
- Part number: 17419
FAQ
What is the Derale 17419 fan?
It is a 19" rigid steel-blade race fan for reverse-rotation engines, built for maximum airflow.
What does reverse rotation mean?
It is designed for reverse (counterclockwise) rotation water pumps, common on serpentine-belt engines.
How is a rigid race fan different from a flex fan?
Its blades stay rigid at all speeds, so it moves maximum air at every rpm rather than flattening to reduce drag.

