Replace OEM:

MTD/Troy-Bilt: 618-0565, 618-0574, 618-0574C, 918-0565, 918-0574, 918-0574C

Fit Models:

MTD: Newer 600 Series with 42" deck
Troy-Bilt: 13AP609G063, 13AQ609G063, 13BD609G063, 13BX609G063 and LTX1842

Notes:

6 pt. star shaft

Pulley Outer Diameter 5 11/16"
Includes grease zerk and 4 mounting bolts
Height: 4 7/8"