| 22 | 248001 / E66 383 | Fan | | |
| 23 | 247380 / 393-497 | Pressure Switch | | |
| 32 | 248016 / E66 393 | Heat Exchanger | | |
| 41 | 248029 / E66 398 | Burner | | |
| 44a | 248210 / E66 402 | Injector - 1.28 | NG | |
| 44b | 248211 | Injector - 0.77 | LPG | |
| 59 | 248037 / E66 408 | Electrode Lead | | |
| 63 | 247384 / E66 411 | Spark or Sensing Electrode | | |
| 72 | 248041 / E66 413 | Pump Complete | | |
| 101 | 248061 / E66 432 | Hydraulic Outlet Assembly | | |
| 102 | 248062 / E66 434 | Valve - 3-Way Assembly | | |
| 103 | 248063 / 343 619 | Pressure Differential Assy | | |
| 131 | 5108265 | Temperature Sensor | | |
| 135 | 248079 | Safety Limit Thermostat | | |
| 140 | 5107339 | Gas Valve | | |
| 154 | 5112657 | PCB | | |
| 169 | 248090 / E66 453 | Pressure Gauge | | |
| A | 5112385 | Gas Valve Plug/Spark Generator & Lead | | |
