Worcester Bosch
Worcester Bosch Pipe (Return) 8737604656
Return pipe for Worcester Bosch Greenstar 2000 Combi boilers, part number 8737604656.
At a glance
- Appliance family: Greenstar 2000 Combi, Gr2301IW platform
- Also known as 1038521
£29.36
£24.47 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 Pipe (Return) is a Worcester Bosch pipe assembly for the Greenstar 2000 Combi boiler range, carrying water back to the heat exchanger as part of the primary circuit. It is supplied under part number 8737604656 and is fitted within the return side of the boiler's pipework. The part is specific to the Gr2301IW combi platform in both 25 C and 30 C variants.
Signs this part needs replacing
- Visible corrosion, pitting or scaling on the pipe wall or at the connection points
- Weeping or dripping from the pipe joints or along the pipe run
- Persistent pressure loss in the primary circuit traced to the return pipework
- Overheating or poor circulation where a restricted or blocked return pipe is identified
Before you order
- Confirm the boiler model and GC number match one of the fitments listed above
- Check the existing pipe for damage, distortion or corrosion at the joints before removal
- Confirm whether any sealing washers, o-rings or clips are needed separately, as none are listed with this part
Compliance
| Alternative numbers | 1038521 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C LPG | 47-800-35 | 47-800-35 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C NG | 47-800-34 | 47-800-34 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C LPG | 47-800-37 | 47-800-37 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C NG | 47-800-36 | 47-800-36 | — | — |
| WORCESTER GREENSTAR GR2301iW 25 C LPG COMBI | — | — | — | |
| WORCESTER GREENSTAR GR2301iW 25 C NG COMBI | — | — | — | |
| WORCESTER GREENSTAR GR2301iW 30 C LPG COMBI | — | — | — | |
| WORCESTER GREENSTAR GR2301iW 30 C NG COMBI | — | — | — |
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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No 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.