Cooling section diagram
Part #1056176
Replaced by #90-244
Cooling section diagram
Part #521713
Replaced by #90-244
Part #520939
Replaced by #45461
Heating section and blower diagram
Part #520938
Replaced by #45461
Part #613709
Cooling section diagram
Part #521843
Replaced by #90-170
Part #605088
Part #609227
Part #522531
The manufacturer no longer makes this part, and there's no substitute part
Part #1056309