Worcester Bosch
Worcester Bosch DHW Pipe 87186838730
Worcester Bosch 87186838730 DHW pipe for Greenstar Si Compact and CDi Compact boilers, carrying water through the domestic hot water circuit.
At a glance
- Part type: Hoses and pipes
- Also known as 1030791
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£21.35
£17.79 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 87186838730 is a domestic hot water (DHW) pipe supplied by the manufacturer for use in its Greenstar Si Compact and CDi Compact boiler families. It forms part of the hot water circuit inside the appliance, carrying water between the DHW components during draw-off. The pipe is a direct replacement item for the original factory-fitted part and is listed under the manufacturer's hoses and pipes category.
Signs this part needs replacing
- Water weeping or dripping from the pipe run or its connections inside the boiler casing
- Visible corrosion, pitting or green/white scale deposits on the pipe surface
- Staining or mineral residue on nearby components beneath the DHW circuit
- Reduced hot water flow or intermittent hot water delivery at the tap
- Noise or vibration from the DHW circuit during draw-off
Before you order
- Check the appliance GC number and model against the compatibility list to confirm the correct pipe for your boiler
- Confirm the part number on the existing component or in the appliance documentation before ordering
- Inspect the surrounding seals and connections while the casing is open, as these are 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 | Hoses & Pipes |
|---|
Compliance
| Manufacturer part number (MPN) | 87186838730 |
|---|---|
| GC number | J04-443 |
| Barcode / EAN | 4051516197278 |
| Commodity code | 8403 90 00 00 |
| Alternative numbers | 1030791 |
| 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 25Si ErP COMPACT LPG | 47-407-74 | 47-407-74 | — | — |
| WORCESTER GREENSTAR 25Si ErP COMPACT NG | 47-406-73 | 47-406-73 | — | — |
| 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 28CDi ErP COMPACT LPG | 47-406-78 | 47-406-78 | — | — |
| WORCESTER GREENSTAR 28CDi ErP COMPACT NG | 47-406-77 | 47-406-77 | — | — |
| WORCESTER GREENSTAR 28Si ErP COMPACT | — | — | — | |
| WORCESTER GREENSTAR 30 SI COMPACT LPG | 47-406-53 | 47-406-53 | — | — |
Showing 10 of 48 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 25Si ErP COMPACT LPG (GC 47-407-74), GREENSTAR 25Si ErP COMPACT NG (GC 47-406-73), GREENSTAR 28Si ErP COMPACT, GREENSTAR 30Si ErP COMPACT LPG (GC 47-406-76), GREENSTAR 30Si ErP COMPACT NG (GC 47-406-75)
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 28CDi ErP COMPACT LPG (GC 47-406-78), GREENSTAR 28CDi ErP COMPACT NG (GC 47-406-77), GREENSTAR 32CDi ErP COMPACT LPG (GC 47-406-80), GREENSTAR 32CDi ErP COMPACT NG (GC 47-406-79), GREENSTAR 36CDi ErP COMPACT LPG (GC 47-406-82), GREENSTAR 36CDi ErP COMPACT NG (GC 47-406-81)
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)
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