Worcester Bosch
Worcester Bosch Cable Tree 87186903780
Worcester Bosch cable tree, part number 87186903780, for Greenstar Highflow 440CDI and 550CDI boilers.
At a glance
- Part type: cable tree (main harness)
- Also known as 1030639
£125.00
£104.17 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 cable tree, part number 87186903780, is the main wiring harness used in the Greenstar Highflow CDI condensing boiler range. It carries the internal electrical connections between the boiler's control components and the appliance's plug-in connectors. In the manufacturer's parts listing it is also described as a main harness.
Signs this part needs replacing
- Boiler fails to fire or locks out with electrical or communication faults traced to the internal loom
- Intermittent operation that changes when the harness or its plugs are moved
- Cracked, corroded or heat-damaged connector housings on the harness
- Chafed, split or discoloured insulation on the wiring runs
- Moisture or vermin damage to the harness inside the casing
Before you order
- Confirm the appliance model and GC number match the fitment list above
- Check whether the installation is natural gas or LPG, as both variants are listed
- Compare the connector layout and part number marking on the existing harness before ordering
- Inspect the mating plugs and sockets on the boiler, as connector damage is often the real fault
Compliance
| GC number | J09-837 |
|---|---|
| Barcode / EAN | 4051516801496 |
| Alternative numbers | 1030639 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR HIGHFLOW 440CDI LPG | 47-406-26 | 47-406-26 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 440CDI NG | 47-406-24 | 47-406-24 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 550CDI LPG | 47-406-25 | 47-406-25 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 550CDI NG | 47-406-27 | 47-406-27 | — | — |
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.
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