Ensure your semi is Ready for the Road Ahead with a cool and reliable motor, with the Horton 2.56" Clockwise 11-Blade Sucker Fan. Due to its ability to create a low pressure zone and a downward movement of air, this replacement fan is the ideal option to direct cool air towards the engine. Fashioned with a clockwise rotation to optimize engine cooling during vehicle operation. FleetPride is your First Click in Heavy Duty .