The Diesel Engine Cooling Fan Designed to Your High Standards

More than just a variable pitch fan, Flexxaire is the world’s leading smart airflow system specifically designed for use on heavy machinery equipment. It’s a complete diesel engine fan system that provides total control of airflow, keeps radiators clean, optimizes engine performance, and reduces fuel use and noise levels.

Rid your radiator of debris. In less than a second.

The Flexxaire diesel engine cooling fan features an actuator that moves the blades into a reversed pitch position and reverses the airflow. This fast-pitch reversible airflow clears debris from the radiator and keeps it clean and operational. There’s no shutdown required, so operators stay productive. And you prevent engine overheating or overcooling.

Use only the airflow you need to keep your system cool

Because the airflow management system of the Flexxaire diesel engine cooling fan matches the airflow with the cooling requirements of real-time conditions, it reduces the fan’s power draw significantly. So, you realize fuel savings and free up power for your machine.

Getting started is easy

The size of every Flexxaire fan is comparable to that of a conventional fan and is easy to install. Just bolt the customized Flexxaire adapter plate to the fan and install the control system.


The Flexxaire fan design allows the fan to fully reverse and keep radiators clean. By reversing the blade pitch, the fan switches the airflow direction and blows off any dirt or debris that has been collected on the radiator.


For nearly 40 years, Flexxaire reversible fans have been enabling diesel engine cooling systems to operate at peak efficiency.  Our reversible fan blades create the precise airflow for efficient radiator cooling, even in extreme conditions, while the smart variable pitch cooling fan system understands when and how to adjust the blade pitch to any fan speed.


To learn more about Flexxaire reversible radiator fan systems—or for help in pinpointing the fan that meets your needs, please reach out to us.