We strongly suggest comparing the posted picture to your faulty unit! SPINDLE BELT BLADE PULLEY 3 SETS. Includes grease zerk, pulley lock nut, blade lock nut and washer. Mounting holes do not have thread. PULLEY PART NUMBER: 129861 173436 153535 177865 532129861 532173436 PULLEY SPECS. Center Hole 5 Point Star. Width 5/8″ Length 135″. Z 248F – 967303601 (2015-01) Z 248F – 967303602 (2015-01) Z 248F – 967336701 (2015-01).