Worcester Bosch
Worcester Bosch Transformer 87472013190
At a glance
- Part type: Transformer
- Also known as 1020321, N0127
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£45.00
£37.50 ex. VAT · VAT at 20%
In stock
Cut-off passed — dispatches next working day
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 87472013190 is a transformer used in Worcester Bosch gas boilers. It sits in the appliance's electrical circuit and provides the low-voltage supply that the control and ignition components rely on, so the boiler can sequence and fire correctly. It is listed under the Worcester spare parts range as a transformer and carries GC number H05-284.
Signs this part needs replacing
- The boiler fails to fire, with no ignition spark at the electrode
- Repeated lockouts that clear on reset and then return
- No low-voltage supply reaching the control board or ignition circuit
- Intermittent operation or a dead control panel on an otherwise powered appliance
- Visible damage, burning or discolouration around the transformer windings or connections
Before you order
- Check the GC number and appliance serial plate against the compatibility list before ordering, as the same part number is used across several Junior and Si II variants.
- Confirm the previous part number 87472012940 if you are matching against an older parts list or an existing unit.
- 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) | 87472013190 |
|---|---|
| GC number | H05-284 |
| Barcode / EAN | 4010009849353 |
| Commodity code | 8504 31 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | WB87472013190, 87472012940, 1020321, N0127 |
| Previous numbers | 87472012940 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER 24 SI II RSF NG | 47-311-65 | 47-311-65 | — | — |
| WORCESTER 24i JUNIOR RSF LPG | 47-311-71 | 47-311-71 | — | — |
| WORCESTER 24i JUNIOR RSF NG | 47-311-69 | 47-311-69 | — | — |
| WORCESTER 28 SI II RSF NG | 47-311-67 | 47-311-67 | — | — |
| WORCESTER 28i JUNIOR RSF NG (FEB 2003) | 47-311-72 | 47-311-72 | — | — |
| WORCESTER 28i JUNIOR RSF NG (MAY 2003) | 47-311-70 | 47-311-70 | — | — |
| WORCESTER BRITISH GAS RD628 RSF | 47-108-14 | 47-108-14 | — | — |
| WORCESTER GREENSTAR 12RI LPG | 41-311-64 | 41-311-64 | — | — |
| WORCESTER GREENSTAR 12RI NG | 41-311-63 | 41-311-63 | — | — |
| WORCESTER GREENSTAR 12Ri ErP LPG | 41-406-42 | 41-406-42 | — | — |
Showing 10 of 38 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 — 24 SI II RSF NG (GC 47-311-65), 28 SI II RSF NG (GC 47-311-67)
manualmanualWORCESTER appliance manual — 24i JUNIOR RSF LPG (GC 47-311-71), 24i JUNIOR RSF NG (GC 47-311-69), 28i JUNIOR RSF NG (FEB 2003) (GC 47-311-72), 28i JUNIOR RSF NG (MAY 2003) (GC 47-311-70)
manualmanualWORCESTER appliance manual — BRITISH GAS RD628 RSF (GC 47-108-14)
manualmanualWORCESTER appliance manual — GREENSTAR 12RI LPG (GC 41-311-64), GREENSTAR 12RI NG (GC 41-311-63), GREENSTAR 15RI CONVENTIONAL LPG (GC 41-311-76), GREENSTAR 15RI CONVENTIONAL NG (GC 41-311-75), GREENSTAR 18RI CONVENTIONAL LPG (GC 41-311-78), GREENSTAR 18RI CONVENTIONAL NG (GC 41-311-77), GREENSTAR 24RI LPG (GC 41-311-66), GREENSTAR 24RI NG (GC 41-311-65)
manualmanualWORCESTER appliance manual — GREENSTAR 12Ri ErP LPG (GC 41-406-42), GREENSTAR 12Ri ErP NG (GC 41-406-41), GREENSTAR 15Ri ErP LPG (GC 41-406-44), GREENSTAR 15Ri ErP NG (GC 41-406-43), GREENSTAR 18Ri ErP LPG (GC 41-406-46), GREENSTAR 18Ri ErP NG (GC 41-406-45), GREENSTAR 24Ri ErP LPG (GC 41-406-48), GREENSTAR 24Ri ErP NG (GC 41-406-47)
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