Dixon deck drive belt fits these cone drive models:
All 42 in. side discharge models from 1974 - 1996
4421 (94-97)
Classic 42 (02-03)

Fits these Hydro drive models:
Speedztr 42 (04)
50 in. mowers (87-97)
5424 42 in. (98)
5000 series 42 and 50 in. (99-03)
1950 50 in. (04)
Kodiak 50 (05-06)