- Large 19-inch span provides maximum radiator airflow coverage
- Flexible blade construction balances low-speed airflow with high-speed efficiency
- Minimizes engine noise and parasitic horsepower draw at speed
- Universal slotted bolt mounting pattern fits standard water pump pulleys
- Heavy-duty steel build provides long-term reliability in high-heat conditions
Offering maximum surface coverage, the Cal Custom 19-inch steel flex fan is engineered for large engine bays and heavy-duty cooling applications. The flexible steel blade design pulls high airflow at low engine speeds while flexing at high RPMs to reduce mechanical resistance and horsepower draw. Its heavy-gauge slotted center hub fits standard water pump bolt patterns, making it a reliable cooling choice for classic towing vehicles and hot rods.