| 1 | 98-4621 | FRAME - assembly (Heat King) | 1 | |
| 55-7767 | INSERT - threaded (1/4-20) | 32 | |
| 55-7489 | INSERT - threaded (5/16-18) | 1 | |
| 55-8305 | INSERT - threaded (3/8-16) | 2 | |
| 2 | 33-2957 | GASKET - sill | 1 | |
| 3 | 98-4609 | COVER - heater box | 1 | |
| 55-1587 | SCREW - cover | 10 | |
| 55-3045 | LOCKWASHER | 10 | |
| 4 | 99-9774 | COVER - access | 1 | |
| 55-5636 | SCREW - cover | 4 | |
| 5 | 33-489 | GROMMET - panel (1.25 od) | 1 | |
| 33-629 | GROMMET - panel (1.0 od) | 1 | |
| 6 | 98-4611 | PANEL - bottom | 1 | |
| 55-1587 | SCREW - panel | 13 | |
| 55-1800 | LOCKWASHER | 13 | |
| 55-2086 | FLATWASHER | 13 | |
| 7 | 98-4622 | DOOR - assembly (curbside, see 121E5) | 1 | |
| 8 | 98-4623 | DOOR - assembly (roadside, see 121E5) | 1 | |
| 9 | 91-6480 | PANEL - louver | 1 | |
| 10 | 98-949 | HOSE (10.5 in lg) | A/R | |
| 11 | 98-949 | HOSE (15 in lg) | A/R | |
| 12 | 55-4979 | CLAMP - hose | 4 | |
| 13 | 33-1389 | GASKET - air exchanger | 1 | |
| 14 | 91-6481 | PLATE - blockoff | 1 | |
| 15 | 55-4573 | SCREW - wing | 1 | |
| 16 | 55-2550 | PIN - cotter | 1 | |