This is a Cub Cadet Steering Wheel Center Cap. What it fits is shown below. New Old Stock Part. Part No. 731-3001.   (12K3)

Cub Cadet 1000 (2050550U, 2050540U) - Cub Cadet Garden Tractor - Steering Gear & Connections
Cub Cadet 1050 (149-605-100) - Cub Cadet Garden Tractor (SN: 756300 - 799999) - Steering
Cub Cadet 1100 (2050590U) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 111 (0350025U) - Cub Cadet Lawn Tractor - Steering
Cub Cadet 1200 (2050056U, 2050570U, 2050580U) - Cub Cadet Garden Tractor - Steering Gear & Connections
Cub Cadet 1204 (148-610-100, 147-610-100) - Cub Cadet Garden Tractor (SN: 756300 - 799999) - Steering
Cub Cadet 1210 - Cub Cadet Garden Tractor (NS: 756299 & Prior) - Mechanical Steering
Cub Cadet 1210 (149-620-100, 147-620-100, 148-620-100) - Cub Cadet Garden Tractor (SN: 756300 - 799999) - Steering
Cub Cadet 1282 (2050587U, 2050603U) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1211 (148-630-100, 149-630-100, 147-630-100) - Cub Cadet Garden Tractor (SN: 756300 - 799999) - Steering
Cub Cadet 1250 (2050059, 2050610U, 2050630) - Cub Cadet Garden Tractor - Steering Gear & Connections
Cub Cadet 482 (142-482-100, 142-482-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1604 (142-580-100, 142-582-100, 142-582-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1282 (142-680-100, 142-680-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1710 (142-682-100, 142-682-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1712 (142-782-100, 142-784-100, 142-784-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 482 (143-482-100, 143-482-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1604 (143-580-100, 143-582-100, 143-582-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1282 (143-680-100, 143-680-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1710 (143-682-100, 143-682-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1712 (143-782-100, 143-784-100, 143-784-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 482 (144-482-100, 144-482-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1604 (144-580-100, 144-582-100, 144-582-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1282 (144-680-100, 144-680-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1710 (144-682-100, 144-682-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1712 (144-782-100, 144-784-100) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1282 (145-680-100, 145-680-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1710 (145-682-100, 145-682-399) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1712 (145-782-100, 145-784-100) - Cub Cadet Garden Tractor - Mechanical Steering
Cub Cadet 1450 (2050065U, 2050660U) - Cub Cadet Garden Tractor - Steering Gear & Connections