This part fits the following boilers:
| Fits Appliance(s) | GC No. | |
| Baxi 124 Combi | – | 47-077-25 |
| Baxi 128 Combi | – | 47-077-26 |
| Baxi Combi 28 Compact | – | 47-075-72 |
| Baxi Megaflo 2 System 12 Compact GA | – | 41-075-70 |
| Baxi Megaflo 2 System 15 Compact GA | – | 41-075-71 |
| Baxi Megaflo 2 System 18 Compact GA | – | 41-075-72 |
| Baxi Megaflo 2 System 24 Compact | – | 41-075-92 |
| Baxi Megaflo 2 System 24 Compact GA | – | 41-075-73 |
| Baxi Megaflo 2 System 28 Compact GA | – | 41-075-74 |
| Baxi Megaflo 2 System 32 Compact GA | – | 41-075-75 |
| Baxi Neta-Tec 24 GA | – | 47-075-51 |
| Baxi Neta-Tec 28 GA | – | 47-075-52 |
| Baxi Neta-Tec 33 GA | – | 47-075-53 |
| Baxi Neta-Tec Plus Combi 24GA | – | 47-075-64 |
| Baxi Neta-Tec Plus Combi 28GA | – | 47-075-65 |
| Baxi Neta-Tec Plus Combi 33 GA | – | 47-075-66 |
| Potterton System 12kW | – | 41-592-71 |
| Potterton System 15kW | – | 41-592-72 |
| Potterton System 18kW | – | 41-592-73 |
| Potterton System 24kW | – | 41-592-74 |
| Potterton System 28kW | – | 41-592-75 |
| Potterton Apollo 25 | – | 47-393-38 |
| Potterton Apollo 30 | – | 47-393-37 |
| Potterton Performa 24 Eco HE 2 Composite Block | – | 47-393-25 |