This part fits the following boilers:
| Fits Appliance(s) | GC No. | |
| Baxi 105 HE A Instant | - | 47-075-50 |
| Baxi Platinum Combi 24 HE | - | 47-075-27 |
| Baxi Platinum Combi 28 HE | - | 47-075-28 |
| Potterton Gold 24 HE Combi | - | 47-590-05 |
| Potterton Gold 28 HE Combi | - | 47-590-06 |
| Potterton Gold 33 HE Combi | - | 47-590-19 |
| Potterton Heatmax Combi 24 HE | - | 47-393-27 |
| Potterton Heatmax Combi 28 HE | - | 47-393-28 |
| Potterton Heatmax Combi 33 HE (After Serial No FMN1112) | - | 47-393-29 |
| Potterton Heatmax Combi 33 HE (Before Serial No FMN1112) | - | 47-393-29 BEFORE |
| Potterton Promax Combi 24 HE Plus | - | 47-393-17 |
| Potterton Promax Combi 24 HE Plus A | - | 47-393-21 |
| Potterton Promax Combi 24 HE Plus LPG | - | 47-393-24 |
| Potterton Promax Combi 28 HE Plus | - | 47-590-04 |
| Potterton Promax Combi 28 HE Plus A | - | 47-393-22 |
| Potterton Promax Combi 33 HE Plus | - | 47-590-03 |
| Potterton Promax Combi 33 HE Plus A | - | 47-393-23 |