Fits Cub Cadet RZT-S54, MTD Z6600 and ZT-L54, Troy-Bilt Mustang 54 XP. Replace Cub Cadet MTD 618-05137, 918-05137, Toro 119-8445, Stens 285-157. 6-7/8 in. Overall Height, 5-1/2 in. Pulley O.D. 6 points star blade adaptor, grease fitting. 4 mounting holes are not tapped, use self-tapping screw (no included).