Part #STD533107
The manufacturer no longer makes this part, and there's no substitute part
Lower half diagram
Part #15X85
Replaced by #703333
Part #20613
Replaced by #420613MA
Lower half diagram
Part #20864
Replaced by #11X16MA
Mower housing diagram
Part #20551
Replaced by #492574MA
#NI
All parts diagram
Part #32618
Replaced by #32618MA
Part #10851Z
Replaced by #10851ZMA
Part #26X214
Replaced by #26X214MA
Mower housing diagram
Part #21189
Replaced by #166X4MA
Mower housing diagram
Part #2X39
Replaced by #2X39MA