Part #91593
Replaced by #12908
Heat exchanger diagram
Part #612919
The manufacturer no longer makes this part, and there's no substitute part
Part #600587
Damper assembly diagram
Part #604636
Replaced by #604967
Part #613531
Replaced by #12910
Furnace body diagram
Part #613839
Replaced by #3L05-1
Part #600586
Part #96839
Part #89726
Functional replacement parts diagram
Part #612254