Part #15X79
Replaced by #703409
Part #STD533107
The manufacturer no longer makes this part, and there's no substitute part
Part #20613
Replaced by #420613MA
Lower half diagram
Part #15X85
Replaced by #703333
Lower half diagram
Part #10851Z
Replaced by #10851ZMA
Mower housing diagram
Part #20551
Replaced by #492574MA
Lower half diagram
Part #20864
Replaced by #11X16MA
Lower half diagram
Part #133X3
Replaced by #90594MA
Mower housing diagram
Part #21189
Replaced by #166X4MA
Mower housing diagram
Part #17X46Z
Replaced by #17X46MA