Xtreme Outdoor Power Equipment Replaces Husqvarna 539103245 Electric PTO Blade Clutch - Free Upgraded Bearings Xtremely cool coil design runs over 20% cooler for a longer service life  plus every clutch is backed by a buyer-protection 1-year warranty Replaces OEM: 103245, 539103245 Replaces Warner: 5218-52 Specs: 1.000 Crankshaft, 6.31" Pulley, Counter Clockwise, 1/2" or 5/8" Belt, 205 ft. lbs torque Free Upgraded - High Temperature Bearings. TOUGH Machined Billet Pulley with Replaceable Bearing - OEM Upgrade