By Heather Burlingame, Senior Production Editor | September 28, 2010

DriveMaster PolarExtreme FanThe DriveMaster PolarExtreme Fan Drive delivers 2,400 inch-pounds of out-of-box torque to turn large fans with more blades and cool EGR engines. In vehicles that have a standard DriveMaster Fan Drive, the new kit can be used to upgrade the fan. It is spring-engaged and air-disengaged and features a friction liner designed for longevity. The fan is available for both first-fit and replacement applications.