This part fits the following boilers:
| Fits Appliance(s) | GC No. | |
| Viessmann 100-WB1B 13kW Compact (Serial No. 7416307) | - | |
| Viessmann 100-WB1B 16kW Compact (Serial No. 7416302) | - | |
| Viessmann 100-WB1B 19kW Compact (Serial No. 7416303) | - | |
| Viessmann 100-WB1B 26kW Compact (Serial No. 7416304) | - |