About Us: We have always been committed to developing the highest quality lawn mower parts. All parts are manufactured to strict quality standards and are rigorously inspected and tested to ensure superior performance, reliability and durability, and we have upgraded materials and processes to make the clutch work better and last longer.Specs:Torque (Newton Metre): 280Nm (205ft- lb)Resistance at 70°F (Ohms): 2.0±0.1Current (Amps): 6Available Bores: 1",1-1/8"Clutch Rotation: CW,CCWConnection: IntegralCompatible with: Lazer Z XS Liquid Cooled, Serial No.600,000 and Up, Lazer Z AS SN720,000/789,999, Z Master Z550 Sn 280000001 to 280999999 Z Master Z555 Sn 240000001 to 250999999 Z Master Z558 Sn 270000001 to 270999999 Z MaSter Z587L Sn 240000001 to 240999999.Lazer Z AS EFI SN510,000 TO 789,999Lazer Z EFI SN370,000 TO 439,999, Lazer Z Air Cooled EFI SN720,000 and up, Lazer Z AS SN510,000 to 719,999, Z Master Z500 Sn 280000001 to 311999999 Z Master Z500 Sn 280000001 to 311999999 Z Master Z557 Sn 240000001 to 260999999 Z Master Z560 Sn 270000001 to 270999999 Z MaSter Z588E Sn 240000001 to 260999999.Z Master Z550 Sn 280000001 to 280999999Replaces OEM Part Numbers: Lastec 043590John Deere TCA23182Dixie Chopper 500056Exmark And Toro: 103-2453, 103-3244, 103-6589, 109-7666, 103-3132, 103-3246, 103-4000, 103-4057, 103-5835, 103-6579, 109-7665, 109-7673, 116-1611, 109-7669, 116-1612Prime 7-06293Wright 71410017, 71410018Lawn Boy 116-1612Warner 5218-203, 5218-254, 5218-159, 5218-101, 5218-217, 5218-168, 5218-202, 5218-209, 5218-99, 5218-141, 5218-270Xtreme: X0460, X0462, X0461Oregon: 33-157Rotary: 12403Stens: 255-488Important Note:Please check the product instructions before purchase to ensure that our clutch is suitable for your mower. If you're not sure, please contact us and we'll help you sort it out.