Part Type: Engine Cooling Fan Clutch. Reverse Rotation Thermal Heavy Duty Fan Clutch. Fan Clutch. Electronic Clutch?. : Non Electronic. Fan Bolt Circle IN: 3.25 in. Fan Bolt Circle MM: 82.6 mm. 2002 Dodge Ram 2500 Engine: 4.7L V8; Counter Clockwise; Heavy Duty Thermal Fan Clutch; w/ AC; w/ Heavy Duty Cooling;.