Worcester Bosch
Worcester Bosch Air Vent 8737604731
Air vent for Worcester Bosch Greenstar 1000 Series and Greenstar Gr1000W appliances.
At a glance
- Appliance family: Worcester Greenstar 1000 Series and Greenstar Gr1000W
- Also known as 1038387
£14.54
£12.12 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 Worcester Bosch 8737604731 is an air vent for Worcester Greenstar 1000 Series and Greenstar Gr1000W appliances. It allows trapped air to be released from the heating circuit, helping maintain correct water circulation and system pressure.
Signs this part needs replacing
- Persistent gurgling or air noise from the appliance or heating circuit.
- Repeated airlocks or poor circulation despite correct system pressure.
- Water weeping or dripping from the air vent body.
- Corrosion, scale or mineral deposits around the vent.
- System pressure that will not hold or requires frequent topping up.
Before you order
- Confirm the appliance model matches one listed in the Fits section.
- Check the existing air vent part number is 8737604731.
- Inspect the vent location and connections for access before ordering.
- If the model is not listed, check the manufacturer's parts list for the correct component.
Compliance
| Alternative numbers | 1038387 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 1000 SERIES GR1000W 24 C NG | 47-800-38 | 47-800-38 | — | — |
| WORCESTER GREENSTAR 1000 SERIES GR1000W 30 C NG | 47-800-39 | 47-800-39 | — | — |
| WORCESTER GREENSTAR GR1000W 24 C NG | — | — | — | |
| WORCESTER GREENSTAR GR1000W 30 C NG | — | — | — |
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.
No technical questions yet for this part.
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