Part #521769
Replaced by #WG840465
Functional replacement parts (cooling section) diagram
Part #521768
Replaced by #WG840465
Part #520939
Replaced by #45461
Functional replacement parts (heating section & blower) diagram
Part #520938
Replaced by #45461
Part #613709
Part #609227
Part #522530
Part #605088
Part #522531
The manufacturer no longer makes this part, and there's no substitute part
Functional replacement parts/815042 diagram
Part #521125