Xtreme PTO Clutch with wiring harness, Heavy Duty "FatBoy Series" replaces OEM #'s for Exmark/Toro: 103-2453, 1032453, 103-3244, 1033244, 103-6589, 1036589, 109-7666, 1097666. Also replaces Warner# 5218-101, 5218101, 5218-217, 5218217. Stens# X0460-K. Super Smooth "Xtreme Precision" Machined Pulley Bearing. Upgraded to 3 Layer "Xtreme TOUGH" Integrated, Water Tight, Impact resistant Wire Harness. Belt width: 1/2" or 5/8", I.D. 1-1/8", Pulley Diameter 7-1/8", Rotation: Clockwise.