Spindle Assembly Includes Pulley, Specially designed: to replace 6 pt. star center hole, Height: 6 ", No threads in housing, use self-tapping screws. Replaces Part Numbers: MTD 918-0431C, MTD 618-0241, MTD 918-0241, MTD 918-0431C, MTD 918-0431B, MTD 918-0241B, MTD 918-0413, MTD 918-04034, MTD 753-05851 Stens Part Number: 285-860