The Derale 19113 is a 13" high performance flex fan with stainless steel blades and a black hub. It mounts to a standard-rotation water pump fan flange, and its flexible stainless blades flatten as engine speed rises to reduce fan drag and noise at higher rpm while still moving strong airflow at idle and low speed. It is a universal mechanical fan for standard (clockwise) rotation applications.
Specifications:
- Type: high performance mechanical flex fan
- Diameter: 13"
- Blade material: stainless steel
- Rotation: standard (clockwise)
- Hub: black
- Mounting: bolts to a standard water pump fan flange
- Part number: 19113
FAQ
What is the Derale 19113 fan?
It is a 13" high performance stainless steel flex fan with a black hub for standard-rotation engines.
What does a flex fan do?
Its flexible stainless blades flatten at higher rpm to cut fan drag and noise while still moving plenty of air at idle.
What rotation does it require?
It is for standard (clockwise) rotation water pumps.

