Proflow UltraCool high-output curved blade fans are designed for your cooling needs. These fans feature an effective curved blade design that is optimized to move as much air as possible across your radiator to increase its cooling capacity. The powerful, sealed, high-torque electric motor is waterproof and dust-proof, making it perfect for off-road or all-season environments. It does not rob your engine of power or fuel economy like mechanical fans. Proflow Performance offers high-output curved blade fans in a variety of sizes so you can find one that perfectly fits your requirements.