Part #STD533107
The manufacturer no longer makes this part, and there's no substitute part
Part #15X79
Replaced by #703409
Lower half diagram
Part #15X85
Replaced by #703333
Part #20613
Replaced by #420613MA
Mower housing diagram
Part #20619Z
Replaced by #20619MA
Lower half diagram
Part #30X49
Replaced by #30X49MA
Mower housing diagram
Part #17X46Z
Replaced by #17X46MA
Mower housing diagram
Part #2X39
Replaced by #2X39MA
Lower half diagram
Part #20864
Replaced by #11X16MA
Mower housing diagram
Part #20551
Replaced by #492574MA