Worcester Bosch
Worcester Bosch Gas-Air Duct WB5-II+ 8737714115
Gas-air duct WB5-II+, part 8737714115, for Worcester Greenstar and Greenstar 8000+ Style gas boilers.
At a glance
- Also known as 1031610
£180.86
£150.72 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
The GAS-AIR DUCT WB5-II+ is a Worcester Bosch gas-air duct, supplied under part number 8737714115. It forms part of the air and gas routing on Worcester Greenstar and Greenstar 8000+ Style appliances. The duct is a service component, replaced when the existing duct is damaged or when combustion readings indicate a problem with the air-gas path.
Signs this part needs replacing
- Visible cracking, splitting or deformation of the duct body
- Discolouration or heat damage on the duct surface
- Combustion analysis readings drifting outside the expected range for the appliance
- Staining or condensate marking around the duct and its connections
- Noise or instability at the air-gas path that points to a damaged duct
Before you order
- Confirm the appliance model against the fit list above, including the Gr8701IW reference
- Check the part number on the existing duct or in the appliance documentation
- Verify the duct reference WB5-II+ matches the component being replaced
Compliance
| Alternative numbers | 1031610 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 32 C NG | 47-800-44 | 47-800-44 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 32 CB NG | 47-800-49 | 47-800-49 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 36 C NG | 47-800-45 | 47-800-45 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 36 CB NG | 47-800-50 | 47-800-50 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 40 C NG | 47-800-46 | 47-800-46 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 30 R NG | 41-800-29 | 41-800-29 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 35 R NG | 41-800-30 | 41-800-30 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 40 R NG | 41-800-31 | 41-800-31 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE SYSTEM GR8701iW 30 S NG | 41-800-27 | 41-800-27 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE SYSTEM GR8701iW 35 S NG | 41-800-28 | 41-800-28 | — | — |
Showing 10 of 20 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
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