Worcester Bosch
Worcester Bosch Heat Exchanger WB5-IV 8737711084
Worcester Bosch heat exchanger WB5-IV, part number 8737711084, for Greenstar 8000+ Style and Greenstar Gr8701IW appliances.
At a glance
- Part type: heat exchanger
- Appliance family: Greenstar 8000+ Style and Greenstar Gr8701IW
- Also known as 1011170
£1,440.28
£1,200.23 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 HEAT EXCHANGER WB5-IV is a Worcester Bosch heat exchanger, supplied under part number 8737711084. It is used across the Greenstar 8000+ Style and Greenstar Gr8701IW appliance family, where it transfers heat from the combustion side into the heating and hot water circuit.
Signs this part needs replacing
- Persistent kettling, banging or gurgling noises from the appliance during operation
- Hot water or heating output that has dropped noticeably and cannot be restored by servicing
- Visible leakage, weeping or staining around the heat exchanger body or its connections
- Repeated overheat or ignition lockouts where the heat exchanger is identified as the cause
- Combustion readings or flue gas analysis that fall outside the expected range after servicing
Before you order
- Confirm the appliance model number matches one of the fitments listed above
- Check whether the appliance is the combi (C) or regular (R) variant, as both appear in the fitment list
- Verify the part number 8737711084 against the number quoted for the existing component
- Cross-check the GC number on the appliance data badge against the model being worked on
Compliance
| Alternative numbers | 1011170 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 45 C NG | 47-800-47 | 47-800-47 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE COMBI GR8701iW 50 C NG | 47-800-48 | 47-800-48 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 40 R NG | 41-800-31 | 41-800-31 | — | — |
| WORCESTER GREENSTAR 8000+ STYLE REGULAR GR8701iW 50 R NG | 41-800-33 | 41-800-33 | — | — |
| WORCESTER GREENSTAR GR8701iW 40 R NG | — | — | — | |
| WORCESTER GREENSTAR GR8701iW 45 C NG | — | — | — | |
| WORCESTER GREENSTAR GR8701iW 50 C NG | — | — | — | |
| WORCESTER GREENSTAR GR8701iW 50 R NG | — | — | — |
Documents & drawings
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