Blade Spindle Assembly replaces Cub Cadet 918-06978. Fits Cub Cadet models RZT-L54, RZT-S54, RZT-SX54 XT1-GT54, XT1-ST54, XT2-GX54, XT2-ST54,ZT1-54 ZT2-54. Also fits Troy Bilt Mustang 54 Zero-Turn model 17CDCACW066. Replaces MTD models 13A7A1ZW099,...