Worcester Bosch
Worcester Bosch Condensate Syphon Greenstar 87107253280
Worcester Bosch condensate syphon (87107253280) for Greenstar combi and condensing boilers, handling condensate removal from the flue and heat exchanger.
At a glance
- Part type: Condensate assembly (syphon)
- Also known as 1012475, N5333
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£73.80
£61.50 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
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 87107253280 is a condensate syphon assembly used in Greenstar gas boilers. It collects condensate produced during combustion and discharges it in controlled amounts into the condensate drain pipework, preventing flue gases from escaping through the drain route. It is a serviceable component within the condensate trap and siphon group and is listed under Worcester spare part type Condensate Traps & Siphons.
Signs this part needs replacing
- Water pooling on the boiler casing or floor beneath the appliance
- Condensate overflowing from the trap or dripping from the syphon body
- Gurgling or bubbling noises from the condensate route during operation
- Boiler locking out or shutting down because condensate cannot drain away
- Visible cracks, scale build-up or a blocked syphon chamber on inspection
Before you order
- Check the GC number and appliance serial plate against the compatibility list to confirm the correct syphon for your model
- Cross-reference the alternative numbers 1012475 and N5333 if the original part number is not marked on the existing component
- Inspect the seals and gaskets on the condensate trap while access is available, as these are commonly disturbed during replacement
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Condensate Traps & Siphons |
|---|---|
| Appliance family | Greenstar |
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 87107253280 |
|---|---|
| GC number | E74-572 |
| Barcode / EAN | 4010009586586 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1012475, N5333 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER BRITISH GAS GREENSTAR CC1-FSN-GB NG 29KW COMBI | 47-108-05 | 47-108-05 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE PLUS-FSN- GB28KW | 47-311-56 | 47-311-56 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE-FSN-GB NG 27KW | 47-311-55 | 47-311-55 | — | — |
| WORCESTER BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 30KW COND COM | 41-108-09 | 41-108-09 | — | — |
| WORCESTER BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 37KW COND COM | 41-108-10 | 41-108-10 | — | — |
| WORCESTER BRITISH GAS GREENSTAR RD428 | 41-108-07 | 41-108-07 | — | — |
| WORCESTER BRITISH GAS GREENSTAR RD537I | 47-108-11 | 47-108-11 | — | — |
| WORCESTER BRITISH GAS RD430I | 41-108-06 | 41-108-06 | — | — |
| WORCESTER BRITISH GAS RD532 | 47-108-13 | 47-108-13 | — | — |
| WORCESTER BRITISH GAS RD532I | 47-108-10 | 47-108-10 | — | — |
Showing 10 of 64 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 — BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 30KW COND COM (GC 41-108-09), BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 37KW COND COM (GC 41-108-10)
manualmanualWORCESTER appliance manual — CS1 RSF 28KW NG (GC 41-108-02)
manualmanualWORCESTER appliance manual — GREENSTAR 25 HE (GC 47-311-73), GREENSTAR 30 HE COMBI (GC 47-311-74)
manualmanualWORCESTER appliance manual — GREENSTAR 28 HE SYSTEM (GC 41-311-58)
manualmanualWORCESTER appliance manual — GREENSTAR 29 HE CONVENTIONAL (JAN 2003) (GC 41-311-59), GREENSTAR 29 HE CONVENTIONAL (JUN 2002) (GC 41-311-56)
manualmanualWORCESTER appliance manual — GREENSTAR 30 HE PLUS COMBI (GC 47-311-75), GREENSTAR 35 HE PLUS COMBI (GC 47-311-76), GREENSTAR HE PLUS-FSN-GB35KW (GC 47-311-57)
manualmanualWORCESTER appliance manual — GREENSTAR R25HE COMBI (GC 47-311-77), GREENSTAR R30HE COMBI (GC 47-311-78)
manualmanualWORCESTER appliance manual — GREENSTAR R28HE SYSTEM (GC 41-311-62)
manualmanualWORCESTER appliance manual — GREENSTAR R29HE CONVENTIONAL (GC 41-311-60), GREENSTAR R40HE CONVENTIONAL (GC 41-311-61)
manualmanualWORCESTER appliance manual — GREENSTAR R30HE PLUS COMBI (GC 47-311-79), GREENSTAR R35HE PLUS COMBI (GC 47-311-80), GREENSTAR R40HE PLUS COMBI (GC 47-311-81)
manualmanualWORCESTER appliance manual — GREENSTAR RSF COMBI NG (GC 47-311-44), GREENSTAR ZWBR 11-25 A31 LPG (GC 47-311-45)
manualmanualWORCESTER appliance manual — ICS1 RSF 28KW NG (GC 41-108-04)
manualNo technical questions yet for this part.
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