Worcester Bosch
Worcester Bosch Syphon Key Assembly 8716117726
Worcester Bosch syphon key assembly (8716117726) for Greenstar i ErP System boilers, part of the condensate trap. GC 729-923.
At a glance
- Part type: Condensate assembly (syphon key)
- Appliance family: Worcester Greenstar i ErP System
- Also known as 1031079
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£4.28
£3.57 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 syphon key assembly is a condensate handling component that sits within the condensate trap of Greenstar gas boilers. It forms part of the syphon arrangement that collects condensate produced during combustion and discharges it to the drain. Worcester Bosch supplies it as a replacement key for the condensate assembly on the Greenstar i ErP System range.
Signs this part needs replacing
- Condensate leaking from the trap or syphon housing
- Water pooling on the floor beneath the boiler
- Boiler locking out or displaying a condensate-related fault code
- Visible cracking, distortion or debris build-up around the syphon key
- Gurgling, slow or intermittent drainage from the condensate trap
Before you order
- Check the GC number and model plate on the appliance before ordering.
- Confirm the part number 8716117726 matches the component being removed.
- Inspect the seals and gaskets in the condensate trap and renew them if worn.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Condensate assembly |
|---|
Compliance
| Manufacturer part number (MPN) | 8716117726 |
|---|---|
| GC number | 729-923 |
| Barcode / EAN | 4054925760446 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1031079 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 12i ErP SYSTEM LPG | 41-406-24 | 41-406-24 | — | — |
| WORCESTER GREENSTAR 12i ErP SYSTEM NG | 41-406-23 | 41-406-23 | — | — |
| WORCESTER GREENSTAR 15i ErP SYSTEM LPG | 41-406-26 | 41-406-26 | — | — |
| WORCESTER GREENSTAR 15i ErP SYSTEM NG | 41-406-25 | 41-406-25 | — | — |
| WORCESTER GREENSTAR 18i ErP SYSTEM LPG | 41-406-28 | 41-406-28 | — | — |
| WORCESTER GREENSTAR 18i ErP SYSTEM NG | 41-406-27 | 41-406-27 | — | — |
| WORCESTER GREENSTAR 21i ErP SYSTEM LPG | 41-406-30 | 41-406-30 | — | — |
| WORCESTER GREENSTAR 21i ErP SYSTEM NG | 41-406-29 | 41-406-29 | — | — |
| WORCESTER GREENSTAR 24i ErP SYSTEM LPG | 41-406-32 | 41-406-32 | — | — |
| WORCESTER GREENSTAR 24i ErP SYSTEM NG | 41-406-31 | 41-406-31 | — | — |
Showing 10 of 32 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 12i ErP SYSTEM LPG (GC 41-406-24), GREENSTAR 12i ErP SYSTEM NG (GC 41-406-23), GREENSTAR 15i ErP SYSTEM LPG (GC 41-406-26), GREENSTAR 15i ErP SYSTEM NG (GC 41-406-25), GREENSTAR 18i ErP SYSTEM LPG (GC 41-406-28), GREENSTAR 18i ErP SYSTEM NG (GC 41-406-27), GREENSTAR 21i ErP SYSTEM LPG (GC 41-406-30), GREENSTAR 21i ErP SYSTEM NG (GC 41-406-29), GREENSTAR 24i ErP SYSTEM LPG (GC 41-406-32), GREENSTAR 24i ErP SYSTEM NG (GC 41-406-31), GREENSTAR 9i ErP SYSTEM LPG (GC 41-406-22), GREENSTAR 9i ErP SYSTEM NG (GC 41-406-21)
manualmanualWORCESTER appliance manual — GREENSTAR 25i ErP COMBI LPG (GC 47-406-61), GREENSTAR 25i ErP COMBI NG (GC 47-406-60), GREENSTAR 30i ErP COMBI LPG (GC 47-406-63), GREENSTAR 30i ErP COMBI NG (GC 47-406-62)
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