Worcester Bosch
Worcester Bosch return pipe 87186642450
Genuine Worcester Bosch return pipe, part number 87186642450, for the 30CDi/40CDi Classic and GR8300iW/GR8701iW range.
At a glance
- Part type: return pipe
- Also known as 1031239
- Work on the sealed heating system should be carried out by a competent, Gas Safe registered engineer
Showing prices
£106.14
£88.45 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
This is a Worcester Bosch return pipe, part number 87186642450, carrying water back into the heating circuit on the 30CDi/40CDi Classic and GR8300iW/GR8701iW boiler ranges.
Signs this part needs replacing
- Water weeping or dripping from the pipe or its joints
- Visible corrosion, splitting or scale build-up on the pipe
- Boiler losing pressure with no other visible leak
Before you order
- Match the part number printed on your existing pipe to 87186642450
- Isolate the boiler and depressurise the heating circuit before removal
- Work on the sealed heating system should be carried out by a competent, Gas Safe registered engineer
Compliance
| GC number | J21-104 |
|---|---|
| Barcode / EAN | 4051516812515 |
| Alternative numbers | 1031239 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 30CDI CONVENTIONAL LPG | 41-311-73 | 41-311-73 | — | — |
| WORCESTER GREENSTAR 30CDI CONVENTIONAL NG | 41-311-71 | 41-311-71 | — | — |
| WORCESTER GREENSTAR 30CDI ErP CLASSIC REGULAR LPG | 41-406-34 | 41-406-34 | — | — |
| WORCESTER GREENSTAR 30CDI ErP CLASSIC REGULAR NG | 41-406-33 | 41-406-33 | — | — |
| WORCESTER GREENSTAR 40CDI CONVENTIONAL LPG | 41-311-74 | 41-311-74 | — | — |
| WORCESTER GREENSTAR 40CDI CONVENTIONAL NG | 41-311-72 | 41-311-72 | — | — |
| WORCESTER GREENSTAR 40CDI ErP CLASSIC REGULAR LPG | 41-406-36 | 41-406-36 | — | — |
| WORCESTER GREENSTAR 40CDI ErP CLASSIC REGULAR NG | 41-406-35 | 41-406-35 | — | — |
| WORCESTER GREENSTAR 8000 LIFE REGULAR GR8300iW 30 R LPG | — | — | — | |
| WORCESTER GREENSTAR 8000 LIFE REGULAR GR8300iW 30 R NG | 41-406-98 | 41-406-98 | — | — |
Showing 10 of 52 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 — GREENSTAR 30CDI CONVENTIONAL LPG (GC 41-311-73), GREENSTAR 30CDI CONVENTIONAL NG (GC 41-311-71), GREENSTAR 40CDI CONVENTIONAL LPG (GC 41-311-74), GREENSTAR 40CDI CONVENTIONAL NG (GC 41-311-72)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI ErP CLASSIC REGULAR LPG (GC 41-406-34), GREENSTAR 30CDI ErP CLASSIC REGULAR NG (GC 41-406-33), GREENSTAR 40CDI ErP CLASSIC REGULAR LPG (GC 41-406-36), GREENSTAR 40CDI ErP CLASSIC REGULAR NG (GC 41-406-35)
manualmanualWORCESTER appliance manual — GREENSTAR 8000 LIFE REGULAR GR8300iW 30 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 30 R NG (GC 41-406-98), GREENSTAR 8000 LIFE REGULAR GR8300iW 35 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 35 R NG (GC 41-406-97), GREENSTAR 8000 LIFE REGULAR GR8300iW 40 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 40 R NG (GC 41-406-96), GREENSTAR 8000 LIFE REGULAR GR8300iW 45 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 45 R NG (GC 41-406-95), GREENSTAR 8000 LIFE REGULAR GR8300iW 50 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 50 R NG (GC 41-406-94), GREENSTAR LIFE GR8300iW 30 R LPG, GREENSTAR LIFE GR8300iW 30 R NG (GC 41-406-98), GREENSTAR LIFE GR8300iW 35 R LPG, GREENSTAR LIFE GR8300iW 35 R NG (GC 41-406-97), GREENSTAR LIFE GR8300iW 40 R LPG, GREENSTAR LIFE GR8300iW 40 R NG (GC 41-406-96), GREENSTAR LIFE GR8300iW 45 R LPG, GREENSTAR LIFE GR8300iW 45 R NG (GC 41-406-95), GREENSTAR LIFE GR8300iW 50 R LPG, GREENSTAR LIFE GR8300iW 50 R NG (GC 41-406-94)
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