AYP/Sears/Craftsman Lawn Mower Rear Wheel No. 581336701. This is an original equipment rear wheel 11X2.RAD3.BLK.BB.2 . Replaces part numbers 583755601, 428780 and 428780X428
AYP/Sears/Craftsman Lawn Mower Wheel No. 180773. This is a true OEM Sears front drive wheel part number 180773. This wheel is the drive wheel with the teeth on the inside.