Worcester Bosch
Worcester Bosch Flow Regulator 87161411430
At a glance
- Part type: Flow regulator
- Also known as 1017779
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£28.98
£24.15 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 a Worcester Bosch flow regulator, supplied under part number 87161411430. It sits in the water circuit of the appliance and restricts the flow rate to the value the boiler is designed to work with, so the heat exchanger and domestic hot water delivery stay within their intended operating range. It is used across the Worcester Bosch Greenstar CDi and Si combi family.
Signs this part needs replacing
- Domestic hot water flow noticeably weaker than it used to be at the taps
- Flow rate drifting outside the boiler's specified range, causing temperature fluctuation
- Scale or debris build-up restricting the regulator and reducing outlet flow
- Inconsistent hot water delivery between different outlets in the property
- Flow regulator found blocked or damaged during a service or repair
Before you order
- Check the GC number and appliance serial plate to confirm the correct variant for your boiler.
- The previous number for this item is ZBUNC139; confirm it against the old part before ordering.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Flow regulator |
|---|
Compliance
| Manufacturer part number (MPN) | 87161411430 |
|---|---|
| GC number | 324-823 |
| Barcode / EAN | 4010009724346 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | WB87161411430, ZBUNC139, 1017779 |
| Previous numbers | ZBUNC139 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 25CDI EMS COMBI NG | 47-311-92 | 47-311-92 | — | — |
| WORCESTER GREENSTAR 25CDI ENS COMBI LPG | 47-311-96 | 47-311-96 | — | — |
| WORCESTER GREENSTAR 25CDI PRE EMS COMBI NG | 47-311-92 | 47-311-92 | — | — |
| WORCESTER GREENSTAR 25SI COMBI LPG | 47-311-88 | 47-311-88 | — | — |
| WORCESTER GREENSTAR 25SI COMBI NG | 47-311-84 | 47-311-84 | — | — |
| WORCESTER GREENSTAR 27CDI EMS COMBI LPG | 47-406-13 | 47-406-13 | — | — |
| WORCESTER GREENSTAR 27CDI EMS COMBI NG | 47-406-12 | 47-406-12 | — | — |
| WORCESTER GREENSTAR 29CDI CLASSIC COMBI LPG | 47-406-35 | 47-406-35 | — | — |
| WORCESTER GREENSTAR 29CDI CLASSIC COMBI NG | 47-406-34 | 47-406-34 | — | — |
| WORCESTER GREENSTAR 29CDI ErP CLASSIC LPG | 47-406-66 | 47-406-66 | — | — |
Showing 10 of 22 compatible appliances.
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 25CDI EMS COMBI NG (GC 47-311-92), GREENSTAR 25CDI ENS COMBI LPG (GC 47-311-96), GREENSTAR 25CDI PRE EMS COMBI NG (GC 47-311-92), GREENSTAR 30CDI NEW EMS LPG (GC 47-311-97), GREENSTAR 30CDI NEW EMS NG (GC 47-311-93)
manualmanualWORCESTER appliance manual — GREENSTAR 25SI COMBI LPG (GC 47-311-88), GREENSTAR 25SI COMBI NG (GC 47-311-84)
manualmanualWORCESTER appliance manual — GREENSTAR 27CDI EMS COMBI LPG (GC 47-406-13), GREENSTAR 27CDI EMS COMBI NG (GC 47-406-12)
manualmanualWORCESTER appliance manual — GREENSTAR 29CDI CLASSIC COMBI LPG (GC 47-406-35), GREENSTAR 29CDI CLASSIC COMBI NG (GC 47-406-34)
manualmanualWORCESTER appliance manual — GREENSTAR 29CDI ErP CLASSIC LPG (GC 47-406-66), GREENSTAR 29CDI ErP CLASSIC NG (GC 47-406-65)
manualmanualWORCESTER appliance manual — HEATSLAVE 9.24 MK 1 & MK 1.5 BF, HEATSLAVE 9.24 MK 1 & MK 1.5 OF, HEATSLAVE 9.24 MK 1 & MK 1.5 RSF
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.