52 Deck Spindle Assembly For Toro 1003976 74179 Z Master Zero Turn Lawn Mower. Sfs Side Discharge Mower 2000. Sfs Side Discharge Mower. Sfs Side Discharge Mower990001-99. Sfs Side Discharge Mower 2001. Sfs Side Discharge Mower 2002. Sfs Side Discharge Mower 2003. Spindle Pulley Width : 19mm. Mounting Hole DIstance : 169mm.