This is a Cub Cadet 42" & 46" Mower Deck Axle. This is a New Old Stock Part. Part No. 711-3256 (39F-1)

 Part Fits These Models:

Cub Cadet 336 SGT (190-336-100) - Cub Cadet 46" Mower Deck - Deck Assembly
Cub Cadet 2140 (134-232G100, 135-232G100) - Cub Cadet Garden Tractor (SN: 239,001 - 326,005) - 42" Deck Assembly 
Cub Cadet 2145 (134-234G100, 135-234G100) - Cub Cadet Lawn Tractor (SN: 239,001 - 326,005) - 42" Deck Assembly
Cub Cadet 2150 (136-242G100, 13B-242G100, 13A-242G100) - Cub Cadet Lawn Tractor (SN: 326,006 & Up) - 42-inch Deck Assembly S/N 359000 And Below
Cub Cadet 2155 (13A-244G100, 13B-244G100, 136-244G100, 13C-244G100) - Cub Cadet Lawn Tractor (SN: 326,006 & Up) - 42 Deck Assembly SN 359000 And Below
Cub Cadet 300 (190-300-100) - Cub Cadet 46" Mower Deck - 46" Deck Assembly
Cub Cadet 320 (190-320-100) - Cub Cadet 42" Mower Deck - Deck Assembly
Cub Cadet 321 (190-321-100) - Cub Cadet 46" Mower Deck - Deck Assembly
Cub Cadet 336 GT (190-336-100) - Cub Cadet 46" Mower Deck - Deck Assembly
Cub Cadet 336 (190-336-100 SGT) - Cub Cadet 46" Mower Super Garden Tractor - Deck Assembly
Cub Cadet 446 (190-446-100) - Cub Cadet 46" Mower Deck - Deck & Attachments