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Radiator Fans - 4000 CFM

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Radiator Fans with 4000 CFM for serious cooling

Turn up the airflow with 4000 cfm to keep big-blocks, high-horsepower builds, and desert heat in check. If space is tight, shallow setups are available, and running them as a puller instead of a pusher delivers the best cooling capacity. High-output electric fans can tax a smaller alternator at idle, so consider your charging system, and a shroud that overlaps side tanks may have a slight effect yet still functions as designed.
Yes, use a dual-fan relay/harness and a thermostatic controller. This helps manage the higher amp load and cycles the fans at the right temp, which is especially helpful in very hot climates. If you're switching from a belt-driven flex fan, going electric can also free up a bit of horsepower.