- 16-inch diameter maximizes cooling capacity for larger radiator cores
- Steel blades automatically adjust pitch at high speed to reduce drag
- High-volume airflow at low rpm maintains safe engine running temperatures
- Universal slotted bolt flange fits standard mechanical water pumps
- Durable black protective finish resists rust and engine bay debris
The Cal Custom 16-inch steel flex fan is engineered to provide radiator airflow for high-performance engines. Its flexible steel blades flex under high RPM to cut aerodynamic drag and horsepower drain while pulling air during low-speed driving and idling. Equipped with a universal slotted mounting flange, this fan bolts to most water pump pulleys, ensuring reliable thermal control for hot rods and classic V8 engines.