Worcester Bosch
Worcester Bosch Nozzle 30 kW G31 3.70mm 87186510170
Gas nozzle for Worcester Bosch Greenstar boilers, rated at 30 kW for G31 (LPG) with a 3.70 mm orifice.
At a glance
- Also known as 8922981
£35.18
£29.32 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
This is a gas nozzle (part number 87186510170) manufactured by Worcester Bosch for use in Greenstar boiler ranges. It is rated at 30 kW for G31 (LPG) and has a 3.70 mm orifice. The nozzle meters the gas supply into the burner, so its bore size and rating must match the appliance and fuel type.
Signs this part needs replacing
- Combustion readings outside the limits given for the appliance, with CO or CO2 figures that cannot be corrected by adjustment
- Unstable or lifting flame at the burner, or a flame that will not hold steady across the firing rate
- Gas rate measured at the meter that cannot be brought within the data badge figure
- Visible damage, blockage or enlargement of the nozzle orifice
- Whistling or irregular noise from the burner at ignition or during running
Before you order
- Confirm the appliance model against the fit list above before ordering
- Check that the boiler is set up for G31 (LPG), as the nozzle rating and orifice size are fuel-specific
- Verify the existing nozzle marking matches 30 kW and 3.70 mm
- Quote part number 87186510170 when checking compatibility
Compliance
| Alternative numbers | 8922981 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C NG | 47-800-26 | 47-800-26 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 30 C NG | 47-800-28 | 47-800-28 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C LPG | 47-800-35 | 47-800-35 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C LPG | 47-800-37 | 47-800-37 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C LPG | 47-800-31 | 47-800-31 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 30 C LPG | 47-800-33 | 47-800-33 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S LPG | 41-800-12 | 41-800-12 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 21 S LPG | 41-800-14 | 41-800-14 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 24 S LPG | 41-800-16 | 41-800-16 | — | — |
| WORCESTER GREENSTAR GR2300iW 25 C NG COMBI | 47-800-26 | 47-800-26 | — | — |
Showing 10 of 18 compatible appliances.
Documents & drawings
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