17in Steel Blade Fan

The 17in Steel Blade Fan from FLEX-A-LITE is a heavy-duty mechanical cooling solution engineered for high-performance applications where belt-driven engine cooling demands reliability and efficiency. Purpose-built for custom hot rods, muscle cars, and racing platforms, this six-blade design delivers consistent airflow without electrical dependency—a critical advantage in vehicles with minimal electrical systems or in competition environments where electronic fan cycling adds parasitic load. The steel construction and durable silver paint finish provide corrosion resistance and longevity in underhood environments subjected to extreme temperatures and vibration.

Operating on proven mechanical principles, the 17in Steel Blade Fan pulls air through the radiator core proportionally to engine RPM, maximizing cooling efficiency during peak thermal demand without the weight penalty or complexity of electric fans. The six-blade configuration balances static and dynamic pressure to move substantial CFM (cubic feet per minute) with minimal noise while the 5/8-inch pilot and adjustable 1-3/4 to 2-1/2-inch bolt pattern accommodate a wide range of water pump hubs and mounting brackets common to small-block and mid-sized engines. All-steel blade construction resists deformation under high-speed operation, ensuring consistent fan geometry and cooling performance over thousands of miles of hard driving.

Racers, street rod builders, and off-road enthusiasts benefit from the passive, maintenance-free operation of a mechanical fan system—no relays, thermostats, or wiring harnesses required. Installation requires only a compatible water pump hub and pulley alignment; verify your engine's bolt pattern and pilot diameter against the 1-3/4 to 2-1/2-inch specification before purchase. At 5.25 pounds, the fan balances effective cooling capacity with minimal rotating mass, making it ideal for carbureted engines, vintage restorations, and any build prioritizing simplicity, durability, and on-demand thermal control.