Perma-Cool HD Flex Fans

$56.98 - $77.98
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  • Stainless steel blades and steel center hub
  • Wider blades for more airflow
  • Standard (RH) or Reverse (LH) Rotation
  • High air flow with minimal hp loss
  • Black or chrome hub colors
  • 15" to 20" diameters

Perma-Cool HD Flex Fans feature wider blades for more CFM and performance. HD Flex Fans pull additional air through the radiator at low RPMs when the speed of the vehicle is not enough to cool the engine's coolant system. At higher RPMs, when the vehicle's speed forces ample air through the radiator, the fan blades flatten out, resulting in less power being used to spin the fan. Engine performance and gas mileage are thus improved. Perfect for applications requiring extra cooling such as vehicles with turbo or superchargers, full-sized cars or trucks used for towing.

HD Flex Fans are available with black powder coated or chrome plated centers, and exclusive polished stainless steel blades. Standard (RH) or Reverse (LH) rotation configurations available.

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Spec Sheet
California Residents: Prop 65 Warning


Installation of the Perma-Cool HD Flex Fans can be completed in the comfort of your own garage. Follow the instructions included with the fans step by step for a seamless installation that will provide years of performance and cooling.


Perma-Cool® provides a limited warranty on manufactured items not covered by the lifetime warranty to give satisfactory performance for their intended purposes for one (1) year from the date of purchase. Neither manufacturer nor seller shall be liable for any injury, loss, damage or inconvenience arising directly or indirectly from the installation or use of these products or the inability to use same. It is the purchaser’s responsibility to determine the suitability of the product for the intended installation, use or application, and purchaser assumes all risks and liabilities whatsoever in connection therewith.