Worcester Bosch
Worcester Bosch Pump Assembly Three Speed 8716120409
At a glance
- Part type: Pump assembly, three speed
- Also known as 1011008, N9329-1
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£238.42
£198.68 ex. VAT · VAT at 20%
In stock
Cut-off passed — dispatches next 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
The Worcester Bosch 8716120409 is a three speed pump assembly used in Worcester Bosch Greenstar gas appliances. It circulates heating water around the primary circuit, maintaining flow through the heat exchanger and out to the radiators. Speed selection allows the flow rate to be matched to the system, which helps the appliance run steadily across different load conditions.
Signs this part needs replacing
- No heating or hot water, with the appliance failing to fire or locking out
- The pump runs hot, seizes or is silent when it should be running
- Grinding, humming or rattling noise from the pump housing
- Radiators staying cold or heating unevenly despite the boiler firing
- Repeated overheat or flow-related fault codes on the appliance display
Before you order
- Check the GC number and appliance serial plate to confirm the pump assembly matches your model
- Compare the numbers on the existing pump against the alternative and previous numbers listed here before ordering
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Pumps |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 8716120409 |
|---|---|
| GC number | H02-527 |
| Barcode / EAN | 8716120409 |
| Commodity code | 8413 70 30 00 |
| GPC classification | Pumps |
| Alternative numbers | WB8716120409, 8-716-106-355-0, 8716119822, 1011008, N9329-1 |
| Previous numbers | 8-716-106-355-0, 87161063550, 8716119822 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 12i SYSTEM LPG | 41-311-69 | 41-311-69 | — | — |
| WORCESTER GREENSTAR 12i SYSTEM NG | 41-311-67 | 41-311-67 | — | — |
| WORCESTER GREENSTAR 15I SYSTEM LPG | 41-406-26 | 41-406-26 | — | — |
| WORCESTER GREENSTAR 15I SYSTEM NG | 41-311-84 | 41-311-84 | — | — |
| WORCESTER GREENSTAR 18I SYSTEM LPG | 41-311-87 | 41-311-87 | — | — |
| WORCESTER GREENSTAR 18I SYSTEM NG | 41-311-86 | 41-311-86 | — | — |
| WORCESTER GREENSTAR 24I JUNIOR MK5 LPG | 47-406-55 | 47-406-55 | — | — |
| WORCESTER GREENSTAR 24I JUNIOR MK5 NG | 47-406-54 | 47-406-54 | — | — |
| WORCESTER GREENSTAR 24I JUNIOR NG | 47-311-86 | 47-311-86 | — | — |
| WORCESTER GREENSTAR 24i JUNIOR LPG | 47-311-90 | 47-311-90 | — | — |
Showing 10 of 36 compatible appliances.
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.
manual
WORCESTER appliance manual — GREENSTAR 12i SYSTEM LPG (GC 41-311-69), GREENSTAR 12i SYSTEM NG (GC 41-311-67), GREENSTAR 15I SYSTEM LPG (GC 41-406-26), GREENSTAR 15I SYSTEM NG (GC 41-311-84), GREENSTAR 18I SYSTEM LPG (GC 41-311-87), GREENSTAR 18I SYSTEM NG (GC 41-311-86), GREENSTAR 24i SYSTEM LPG (GC 41-311-70), GREENSTAR 24i SYSTEM NG (GC 41-311-68)
manualmanualWORCESTER appliance manual — GREENSTAR 24I JUNIOR MK5 LPG (GC 47-406-55), GREENSTAR 24I JUNIOR MK5 NG (GC 47-406-54), GREENSTAR 24I JUNIOR NG (GC 47-311-86), GREENSTAR 24i JUNIOR LPG (GC 47-311-90), GREENSTAR 28I JUNIOR MK5 LPG (GC 47-406-57), GREENSTAR 28I JUNIOR MK5 NG (GC 47-406-56), GREENSTAR 28i JUNIOR LPG (GC 47-311-91), GREENSTAR 28i JUNIOR NG (GC 47-311-87)
manualmanualWORCESTER appliance manual — GREENSTAR 25SI COMBI LPG (GC 47-311-88), GREENSTAR 25SI COMBI NG (GC 47-311-84), GREENSTAR 30 SI COMBI LPG (GC 47-311-89), GREENSTAR 30 SI COMBI NG (GC 47-311-85)
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