Worcester Bosch
Worcester Bosch Harness Flow Sensor 8716121404
Worcester Bosch harness flow sensor, part number 8716121404, for Greenstar 4000 combi and system boilers.
At a glance
- Also known as 8922923
£9.82
£8.18 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 Harness Flow Sensor is a flow sensor wiring harness used on Worcester Greenstar 4000 series boilers. It forms part of the boiler's flow sensing circuit, allowing the appliance to monitor water flow through the heating system. The part is supplied by Worcester Bosch under part number 8716121404.
Signs this part needs replacing
- Flow-related fault codes logged by the boiler
- Boiler fails to register demand or fires intermittently despite a call for heat
- Damaged, chafed or corroded wiring at the sensor harness
- Loose or poor connection at the sensor plug, causing intermittent readings
- Flow sensor readings that do not change as expected during operation
Before you order
- Confirm the boiler model and GC number against the fitment list above
- Check the existing harness and sensor plug for physical damage or corrosion
- Verify the part number 8716121404 matches the component being replaced
- Confirm whether the appliance is an NG or LPG variant before ordering
Compliance
| Alternative numbers | 8922923 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C LPG | 47-800-31 | 47-800-31 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C NG | 47-800-30 | 47-800-30 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 30 C LPG | 47-800-33 | 47-800-33 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 30 C NG | 47-800-32 | 47-800-32 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S LPG | 41-800-08 | 41-800-08 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S NG | 41-800-07 | 41-800-07 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S LPG | 41-800-10 | 41-800-10 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S NG | 41-800-09 | 41-800-09 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S LPG | 41-800-12 | 41-800-12 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S NG | 41-800-11 | 41-800-11 | — | — |
Showing 10 of 28 compatible appliances.
Documents & drawings
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