Worcester Bosch
Worcester Bosch Expansion Vessel Support 8737602309
Mounting support for the expansion vessel in Worcester Bosch Greenstar 2000 and 4000 combi and system boilers.
At a glance
- Also known as 1038229
£18.62
£15.52 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 expansion vessel support is a Worcester Bosch mounting component (part number 8737602309) that holds the expansion vessel in position within the appliance casing. It is used across the Greenstar 2000 and Greenstar 4000 combi and system boiler families. Its role is to keep the vessel secure and correctly located so that the vessel connection and the surrounding internal components are not placed under strain.
Signs this part needs replacing
- The expansion vessel is loose or moves within the casing
- Rattling or vibration from the vessel area during firing or pump operation
- The support is visibly corroded, bent, cracked or distorted
- The vessel will not sit correctly or remains misaligned after refitting
Before you order
- Check the boiler data badge and confirm the model and GC number against the fits list
- Confirm the existing support is the part being replaced by matching part number 8737602309
- Inspect the expansion vessel and its connection for damage before refitting the support
- Check whether any associated fixings or seals are required alongside the support
Compliance
| Alternative numbers | 1038229 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C LPG | 47-800-27 | 47-800-27 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C NG | 47-800-26 | 47-800-26 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 30 C LPG | 47-800-29 | 47-800-29 | — | — |
| 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 25 C NG | 47-800-34 | 47-800-34 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C LPG | 47-800-37 | 47-800-37 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C NG | 47-800-36 | 47-800-36 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C LPG | 47-800-31 | 47-800-31 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C NG | 47-800-30 | 47-800-30 | — | — |
Showing 10 of 44 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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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