This part fits following boiler:
| Fits Appliance(s) | GC No. | |
| Worcester 24CDi-BF/NG | - | 47-311-29 |
| Worcester 24CDi-Of/LPG | - | 47-311-33 |
| Worcester 24CDi-Of/NG | - | 47-311-32 |
| Worcester 24CDi-RSF/LPG | - | 47-311-31 |
| Worcester 24CDi-RSF/NG | - | 47-311-30 |
| Worcester 26 CDI Xtra LPG | - | 47-311-42 |
| Worcester 26 CDI Xtra NG | - | 47-311-41 |
| Worcester 28CDi-RSF/LPG | - | 47-311-35 |
| Worcester 28CDi-RSF/NG | - | 47-311-34 |
| Worcester 35CDi II | - | 47-311-58 |
| Worcester 533 Compact | - | 47-406-58 |
| Worcester 533 Compact ErP | - | 47-406-83 |
| Worcester 535 Compact | - | 47-406-59 |
| Worcester 535 Compact ErP | - | 47-406-84 |
| Worcester Greenstar 28 CDI Compact | - | 47-406-44 |
| Worcester Greenstar 28 CDI Compact LPG | - | 47-406-45 |
| Worcester Greenstar 32 CDI Compact | - | 47-406-46 |
| Worcester Greenstar 32 CDI Compact LPG | - | 47-406-47 |
| Worcester Greenstar 36 CDI Compact | - | 47-406-48 |
| Worcester Greenstar 36 CDI Compact LPG | - | 47-406-49 |
| Worcester Greenstar 28 CDI Compact ERP | - | 47-406-77 (7733600054) |
| Worcester Greenstar 28 CDI Compact ERP LPG | - | 47-406-78 (7733600057) |
| Worcester Greenstar 32 CDI Compact ERP | - | 47-406-79 (7733600055) |
| Worcester Greenstar 32 CDI Compact ERP LPG | - | 47-406-80 (7733600058) |
| Worcester Greenstar 36 CDI Compact ERP | - | 47-406-81 (7733600056) |
| Worcester Greenstar 36 CDI Compact ERP LPG | - | 47-406-82 (7733600059) |
| Worcester Greenstar 30 CDI System | - | 41-311-93 |
| Worcester Greenstar Combi 25 CDI | - | 47-311-92 |
| Worcester Greenstar Combi 27 CDI HE | - | 47-406-12 |
| Worcester Greenstar Combi 27 CDI HE LPG | - | 47-406-13 |
| Worcester Greenstar Combi 30 CDI | - | 47-311-93 |
| Worcester Greenstar Combi 30 CDI HE | - | 47-406-14 |
| Worcester Greenstar Combi 30 CDI HE LPG | - | 47-406-15 |
| Worcester Greenstar Combi 35 CDI | - | 47-311-94 |
| Worcester Greenstar Combi 37 CDI HE | - | 47-406-08 |
| Worcester Greenstar Combi 37 CDI HE LPG | - | 47-406-09 |
| Worcester Greenstar Combi 40 CDI | - | 47-311-95 |
| Worcester Greenstar 29 CDI Classic | - | 47-406-34 |
| Worcester Greenstar 29 CDI Classic LPG | - | 47-406-35 |
| Worcester Greenstar 34 CDI Classic | - | 47-406-36 |
| Worcester Greenstar 34 CDI Classic LPG | - | 47-406-37 |
| Worcester Greenstar 38 CDI Classic | - | 47-406-38 |
| Worcester Greenstar 38 CDI Classic LPG | - | 47-406-39 |
| Worcester Greenstar Combi 42 CDI HE (Classic) | - | 47-406-10 |
| Worcester Greenstar Combi 42 CDI HE (Classic) LPG | - | 47-406-11 |
| Worcester Greenstar 29 CDI Classic ERP | - | 47-406-65 (7738100248) |
| Worcester Greenstar 29 CDI Classic ERP LPG | - | 47-406-66 |
| Worcester Greenstar 30 CDI Classic System ErP | - | 41-406-37 (7738100244) |
| Worcester Greenstar 30 CDI Classic System ErP LPG | - | 41-406-38 (7738100233) |
| Worcester Greenstar 34 CDI Classic ERP | - | 47-406-67 (7738100250) |
| Worcester Greenstar 34 CDI Classic ERP LPG | - | 47-406-68 |
| Worcester Greenstar 35 CDI Classic System ErP | - | 41-406-39 (7738100236) |
| Worcester Greenstar 35 CDI Classic System ErP LPG | - | 41-406-40 (7738100237) |
| Worcester Greenstar 38 CDI Classic ERP | - | 47-406-69 (7738100252) |
| Worcester Greenstar 38 CDI Classic ERP LPG | - | 47-406-70 |
| Worcester Greenstar 42 CDI Classic ERP | - | 47-406-71 (7738100246) |
| Worcester Greenstar 42 CDI Classic ERP LPG | - | 47-406-72 |
| Worcester Greenstar Highflow 440 | - | 47-311-82 |
| Worcester Greenstar Highflow 440 CDI ErP | - | 47-406-89 (7731600098) |
| Worcester Greenstar Highflow 440 CDI ErP LPG | - | 47-406-90 (7731600099) |
| Worcester Greenstar Highflow 550 CDI | - | 47-406-25 |
| Worcester Greenstar Highflow 550 CDI ErP | - | 47-406-91 (7731600100) |
| Worcester Greenstar Highflow 550 CDI ErP LPG | - | 47-406-92 (7731600101) |
| Worcester Greenstar 25i Combi ERP | - | 47-406-60 (7733600012) |
| Worcester Greenstar 25i Combi ERP LPG | - | 47-406-61 (7733600031) |
| Worcester Greenstar 30i Combi ERP | - | 47-406-62 (7733600005) |
| Worcester Greenstar 30i Combi ERP LPG | - | 47-406-63 (7733600032) |
| Worcester Greenstar 12 i System | - | 41-311-67 |
| Worcester Greenstar 12 i System LPG | - | 41-311-69 |
| Worcester Greenstar 15 i System | - | 41-311-84 |
| Worcester Greenstar 15 i System LPG | - | 41-311-85 |
| Worcester Greenstar 18 i System | - | 41-311-86 |
| Worcester Greenstar 18 i System LPG | - | 41-311-87 |
| Worcester Greenstar 24 i System | - | 41-311-68 |
| Worcester Greenstar 24 i System LPG | - | 41-311-70 |
| Worcester Greenstar 12 i System ERP | - | 41-406-23 (7733600010) |
| Worcester Greenstar 12 i System ERP LPG | - | 41-406-24 (7733600034) |
| Worcester Greenstar 15 i System ERP | - | 41-406-25 (7733600009) |
| Worcester Greenstar 15 i System ERP LPG | - | 41-406-26 (7733600035) |
| Worcester Greenstar 18 i System ERP | - | 41-406-27 (7733600008) |
| Worcester Greenstar 18 i System ERP LPG | - | 41-406-28 (7733600036) |
| Worcester Greenstar 21 i System ERP | - | 41-406-29 (7733600007) |
| Worcester Greenstar 21 i System ERP LPG | - | 41-406-30 (7733600037) |
| Worcester Greenstar 24 i System ERP | - | 41-406-31 (7733600006) |
| Worcester Greenstar 24 i System ERP LPG | - | 41-406-32 (7733600038) |
| Worcester Greenstar 9 i System ERP | - | 41-406-21 (7733600011) |
| Worcester Greenstar 9 i System ERP LPG | - | 41-406-22 (7733600033) |
| Worcester Greenstar 24 i Junior HE | - | 47-311-86 |
| Worcester Greenstar 24 i Junior HE LPG | - | 47-311-90 |
| Worcester Greenstar 24 i Junior HE Mk5 2013 NG/LPG - | - | 47-406-54 |
| Worcester Greenstar 28 I Junior HE | - | 47-311-87 |
| Worcester Greenstar 28 I Junior HE LPG | - | 47-311-91 |
| Worcester Greenstar 28 I Junior HE MK5 2013 NG/LPG - | - | 47-406-56 |
| Worcester 12/18 OOO GB Oil (Feb 2008 Onwards) 7716100124 | - | |
| Worcester 18/25 OOO GB Oil (Feb 2008 Onwards) 7716100125 | - | |
| Worcester Heatslave 12/18 Ext (Feb 2007 Onwards) 7716100117 | - | |
| Worcester Heatslave 18/25 Ext (Feb 2007 Onwards) 7716100118 | - | |
| Worcester Heatslave 25/32 Ext (Feb 2007 Onwards) 7716100119 | - | |
| Worcester Heatslave HE 12/18 Internal(Dec 2006 Onwards) 7716100097 | - | |
| Worcester Heatslave HE 18/25 Internal(Aug 2005 Onwards) 7716100098 | - | |
| Worcester Heatslave HE 25/32 Internal (Dec 2006 Onwards) 7716100099 | - | |
| Worcester Greenstar 25 Si | - | 47-311-84 |
| Worcester Greenstar 25 Si LPG | - | 47-311-88 |
| Worcester Greenstar 30 Si | - | 47-311-85 |
| Worcester Greenstar 30 Si LPG | - | 47-311-89 |
| Worcester Greenstar 25 SI Compact | - | 47-406-50 |
| Worcester Greenstar 25 SI Compact LPG | - | 47-406-51 |
| Worcester Greenstar 30 SI Compact LPG | - | 47-406-53 |
| Worcester Greenstar 30 SI Compact NG | - | 47-406-52 |
| Worcester Greenstar 25 SI Compact ERP | - | 47-406-73 (7733600050) |
| Worcester Greenstar 25 SI Compact ERP LPG | - | 47-406-74 (7733600051) |
| Worcester Greenstar 30 SI Compact ERP | - | 47-406-75 (7733600052) |
| Worcester Greenstar 30 SI Compact ERP LPG | - | 47-406-76 (7733600053) |
| Worcester 24i RSF | - | 47-311-37 |
| Worcester 24i Junior RSF | - | 47-311-69 |
| Worcester 24i Junior RSF LPG | - | 47-311-71 |
| Worcester 28i Junior RSF | - | 47-311-70 |
| Worcester 28i Junior RSF LPG | - | 47-311-72 |
| Worcester RD628 RSF (April 2003 Onwards) 7716130090 | - | 47-108-14 |
| Worcester 15 SBI | - | 41-311-43 |
| Worcester 24 SBI | - | 41-311-44 |
| Worcester 24SI II | - | 47-311-65 |
| Worcester 28SI II | - | 47-311-67 |