Worcester Bosch
Worcester Bosch Seal Secondary Heat Exchanger 77470097250
Secondary heat exchanger seal for Worcester Bosch Greenstar Danesmoor and Heatslave II 18/25 ErP appliances.
At a glance
- Appliance family: Greenstar Danesmoor and Greenstar Heatslave II 18/25 ErP
- Also known as 2243555
£84.10
£70.08 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 77470097250 is a seal for the secondary heat exchanger. It is used on the Worcester Bosch Greenstar Danesmoor and Greenstar Heatslave II 18/25 ErP appliances listed below, where it provides a watertight seal at the secondary heat exchanger.
Signs this part needs replacing
- Water weeping or dripping from around the secondary heat exchanger
- Visible water staining, corrosion or scale deposits at the seal joint
- Boiler pressure dropping repeatedly and needing frequent top-ups
- The seal appears hardened, flattened or perished when inspected
Before you order
- Confirm your appliance model against the fit list above
- Check that part number 77470097250 matches the seal currently fitted
- Inspect the sealing faces for corrosion or damage before fitting a new seal
- Isolate the appliance and drain down before removing the old seal
Compliance
| Alternative numbers | 2243555 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR DANESMOOR 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR DANESMOOR EXTERNAL 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR DANESMOOR SYSTEM 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR DANESMOOR SYSTEM EXT 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR DANESMOOR SYSTEM UTILITY 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR DANESMOOR UTILITY 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 18/25 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.
WORCESTER appliance manual — GREENSTAR DANESMOOR 18/25 ErP, GREENSTAR DANESMOOR SYSTEM 18/25 ErP
manualmanualWORCESTER appliance manual — GREENSTAR DANESMOOR EXTERNAL 18/25 ErP, GREENSTAR DANESMOOR SYSTEM EXT 18/25 ErP
manualmanualWORCESTER appliance manual — GREENSTAR DANESMOOR SYSTEM UTILITY 18/25 ErP, GREENSTAR DANESMOOR UTILITY 18/25 ErP
manualmanualWORCESTER appliance manual — GREENSTAR HEATSLAVE II 18/25 ErP
manualmanualWORCESTER appliance manual — GREENSTAR HEATSLAVE II EXT 18/25 ErP
manualNo 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.