Worcester Bosch
Worcester Bosch Cap Pump Diverter Valve 87186840110
Worcester Bosch cap pump diverter valve, part number 87186840110, for Greenstar Heatslave II ErP appliances.
At a glance
- Also known as 2246589
£26.89
£22.41 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 the Worcester Bosch cap pump diverter valve, supplied under part number 87186840110. It forms part of the diverter valve assembly used across the Worcester Greenstar Heatslave II ErP appliance family, where it sits on the pump and diverter valve arrangement that directs water between the heating circuit and the domestic hot water store. The component is manufactured by Worcester Bosch for use in the appliances listed below.
Signs this part needs replacing
- Domestic hot water runs cold or lukewarm while the heating continues to work
- Heating circuit warms when only hot water is demanded, indicating the diverter is not seating correctly
- The valve body or cap shows signs of weeping, staining or scale build-up
- Diverter valve operation becomes stiff or fails to move through its full travel
Before you order
- Confirm the appliance model matches one of the Greenstar Heatslave II ErP models listed in the Fits section
- Check the part number against the marking on the existing cap or diverter valve body
- Inspect the surrounding pump and diverter assembly for wear before fitting, as a sticking valve often affects more than one component
Compliance
| Alternative numbers | 2246589 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR HEATSLAVE II 12/18 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II 25/32 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 12/18 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 25/32 ErP | — | — | — |
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 technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.