| 040389 | T9 M4, M4A, M4B, M4C, M4D | |
| 713529 | Compressor Kit - M4 | |
| 712869 | Compressor Kit - M4A | |
| 713215 | Compressor Kit - M4B | |
| 714622 | Compressor Kit - M4C | |
| 715108 | Compressor Kit - M4D | |
| 813527 | Installation Kit - M4 (after 5/93) | |
| 813529 | Installation Kit - M4 (before 5/93) | |
| 813755 | Installation Kit - M4A, M4B | |
| 813527 | Installation Kit - M4C, M4D | |
| 813528 | Thermostat/Setpoint - M4, M4C, M4D | |
| 913755 | System - T9 M4A | |
| 913756 | System - T9 M4B | |
| 915108 | System - T9 M4D | |
| 914622 | System - T9 M4C | |
| 913529 | System - T9 M4 | |