Spindle Assembly / MTD 918-05078APack Size:1MTD 618-05078, MTD 618-05078A, MTD 918-05078, MTD 918-05078ARotary 15287Cub Cadet RZT-S46; MTD ZT-S46; Troy-Bilt Mustang XP 46 and Mustang Pivot S 46Height: 7 1/4 ", OD of Pulley: 6 7/16 ", Includes nut, spacer, grease zerk and pulley, No threads in housing, use self-tapping screws, Specially designed spindle shaft to replace 6 pt. star