Worcester Bosch
Worcester Bosch pump assembly 8716117574 - Greenstar Heatslave II
Genuine Worcester Bosch circulating pump assembly for the Greenstar Heatslave II 12/18 and 18/25 range.
At a glance
- Also known as 2244683
- Have a Gas Safe registered engineer carry out installation
Showing prices
£427.50
£356.25 ex. VAT · VAT at 20%
Available to order · 1 working day
Available to order · 1 working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
Genuine Worcester Bosch pump assembly, which circulates heated water through the boiler's main and secondary heat exchangers to the radiators and hot water taps.
Signs this part needs replacing
- Little or no heat from radiators despite the boiler firing
- Unusual humming or grinding noise from the pump
- Boiler locks out on a circulation or flow fault
- Leaking or weeping from the pump housing
Before you order
- Match part number 8716117574 printed on your existing pump
- Isolate the electrical supply and drain the system before removal
- Have a Gas Safe registered engineer carry out installation
Mechanical
| Part type | PUMPS |
|---|
Compliance
| Manufacturer part number (MPN) | 8716117574 |
|---|---|
| Alternative numbers | 2244683 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR HEATSLAVE II 12/18 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II 18/25 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 12/18 ErP | — | — | — | |
| WORCESTER GREENSTAR HEATSLAVE II EXT 18/25 ErP | — | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.