This part fits the following boilers:
| Fits Appliance(s) | GC No. | |
| Ferroli Arena 30 A | - | 47-267-15 |
| Ferroli Arena 30 C | - | 47-267-25 |
| Ferroli Combi 100FF | - | 47-267-07 |
| Ferroli Combi 76FF | - | 47-267-03 |
| Ferroli Combi 77CF | - | 47-267-02 |
| Ferroli Combi 77FF | - | 47-267-04 |
| Ferroli Combi 77FF Popular | - | 47-267-06 |
| Ferroli Domina 80 E MF01 (03/98) | - | 47-267-23 (30R0221/0) |
| Ferroli Domina 80 E MF02 (09/98) | - | 47-267-23A (30R0221/0) |
| Ferroli Hawk | - | 47-381-01 |
| Ferroli Hawk 11 | - | 47-267-22 |
| Ferroli 35 S (01/07/2004) | - | 41-267-21 (30K0088000) |
| Ferroli 35C | - | 47-267-33 |
| Ferroli Optima 1000 | - | 47-267-12 |
| Ferroli Optima 1001 | - | 47-267-19 (30R0044/0) |
| Ferroli Optima 200 | - | 47-267-11 |
| Ferroli Optima 2001 | - | 47-267-21 |
| Ferroli Optima 201 | - | OPT 201 |
| Ferroli Optima 600 | - | 47-267-10 |
| Ferroli Optima 601 | - | OPT 601 |
| Ferroli Optima 700 | - | 47-267-09 |
| Ferroli Optima 701 | - | 47-267-16 |
| Ferroli Optima 800 | - | 47-267-08 |
| Ferroli Optima 801 | - | 47-267-17 |
| Ferroli Optima 900 | - | 47-267-13 |
| Ferroli Optima 901 | - | 47-267-18 |
| Ferroli Sys 10- 23 (01/2004) | - | 41-267-20 (30K00470) |
| Ferroli Tempra | - | 41-267-06 |
| Ferroli Xignal | - | 47-267-14 |