Worcester Bosch
Worcester Bosch Ignition Transformer 87186880150
Worcester Bosch 87186880150 ignition transformer for Greenstar gas boilers, supplying the high-voltage spark to the ignition electrode.
At a glance
- Part type: Ignition transformer
- Also known as 2246773
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£53.95
£44.96 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 87186880150 is an ignition transformer used in the ignition circuit of Worcester Bosch Greenstar gas boilers. It steps up the low supply voltage from the control board to the high voltage needed at the ignition electrode, producing the spark that lights the burner. It is a serviceable electrical component within the boiler's ignition assembly.
Signs this part needs replacing
- The boiler calls for heat but the burner does not light, with no spark at the ignition electrode.
- Repeated lockouts shortly after a demand for heat, cleared by a reset that then fails again.
- A weak, intermittent or absent spark when the ignition sequence is observed.
- Ignition faults traced to the transformer windings or its connections during electrical testing.
- The boiler runs normally once lit, pointing to the ignition circuit rather than the gas or flame sensing side.
Before you order
- Check the boiler's GC number and model against the compatibility list to confirm this transformer is the correct fit.
- Confirm the part number on the existing component matches 87186880150 before ordering.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Transformers |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 87186880150 |
|---|---|
| GC number | J04-369 |
| Barcode / EAN | 87186880150 |
| Commodity code | 8504 31 80 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 2246773 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 25SI COMPACT LPG | 47-406-51 | 47-406-51 | — | — |
| WORCESTER GREENSTAR 25SI COMPACT NG | 47-406-50 | 47-406-50 | — | — |
| WORCESTER GREENSTAR 27I COMPACT SYSTEM LPG | 41-406-14 | 41-406-14 | — | — |
| WORCESTER GREENSTAR 27I COMPACT SYSTEM NG | 41-406-13 | 41-406-13 | — | — |
| WORCESTER GREENSTAR 28 CDI COMPACT LPG | 47-406-45 | 47-406-45 | — | — |
| WORCESTER GREENSTAR 28 CDI COMPACT NG | 47-406-44 | 47-406-44 | — | — |
| WORCESTER GREENSTAR 30 SI COMPACT LPG | 47-406-53 | 47-406-53 | — | — |
| WORCESTER GREENSTAR 30 SI COMPACT NG | 47-406-52 | 47-406-52 | — | — |
| WORCESTER GREENSTAR 30I COMPACT SYSTEM LPG | 41-406-16 | 41-406-16 | — | — |
| WORCESTER GREENSTAR 30I COMPACT SYSTEM NG | 41-406-15 | 41-406-15 | — | — |
Showing 10 of 28 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 25SI COMPACT LPG (GC 47-406-51), GREENSTAR 25SI COMPACT NG (GC 47-406-50), GREENSTAR 30 SI COMPACT LPG (GC 47-406-53), GREENSTAR 30 SI COMPACT NG (GC 47-406-52)
manualmanualWORCESTER appliance manual — GREENSTAR 27I COMPACT SYSTEM LPG (GC 41-406-14), GREENSTAR 27I COMPACT SYSTEM NG (GC 41-406-13), GREENSTAR 30I COMPACT SYSTEM LPG (GC 41-406-16), GREENSTAR 30I COMPACT SYSTEM NG (GC 41-406-15)
manualmanualWORCESTER appliance manual — GREENSTAR 28 CDI COMPACT LPG (GC 47-406-45), GREENSTAR 28 CDI COMPACT NG (GC 47-406-44)
manualmanualWORCESTER appliance manual — GREENSTAR 32CDI COMPACT LPG (GC 47-406-47), GREENSTAR 32CDI COMPACT NG (GC 47-406-46), GREENSTAR 36CDI COMPACT LPG (GC 47-406-49), GREENSTAR 36CDI COMPACT NG (GC 47-406-48)
manualmanualWORCESTER appliance manual — GREENSTAR RI 27KW COMPACT LPG (GC 41-406-18), GREENSTAR RI 27KW COMPACT NG (GC 41-406-17), GREENSTAR Ri 30KW COMPACT LPG (GC 41-406-20), GREENSTAR Ri 30KW COMPACT NG (GC 41-406-19)
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.