Worcester Bosch
Worcester Bosch Circulation Pump 130mm G1 1/2 8737714325
Worcester Bosch 8737714325 Para RSL circulation pump, 130mm port-to-port with G1 1/2 connections, for Greenstar HE and CS1 combi and system boilers.
At a glance
- Part type: Pump
- Also known as 1019946
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£332.23
£276.86 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 8737714325 is a Para RSL circulating pump used to move heating water around the primary circuit of the appliance. It is a direct replacement pump for a range of Worcester and British Gas badged Greenstar HE and CS1 boilers. The pump body measures 130mm between port centres and uses G1 1/2 connections.
Signs this part needs replacing
- No heating circulation, with radiators staying cold while the boiler fires
- Pump running hot, noisy or emitting a grinding or humming sound
- Boiler locking out or showing a circulation-related fault code
- Pump head not turning when checked, or the impeller seized
- Water weeping from the pump body or gland area
Before you order
- Check the GC number and appliance serial plate to confirm the pump matches your boiler model
- Confirm the existing pump is a Para RSL unit with 130mm port centres and G1 1/2 connections before removal
- Note the previous Worcester numbers 8-717-204-477-0 and 87172044770, which may appear on older stock or documentation
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Pump |
|---|
Compliance
| Manufacturer part number (MPN) | 8737714325 |
|---|---|
| GC number | E74-909 |
| Barcode / EAN | 8737714325 |
| Commodity code | 8413 70 00 10 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 8-717-204-477-0, 1019946 |
| Previous numbers | 8-717-204-477-0, 87172044770 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER BRITISH GAS GREENSTAR CC1-FSN-GB NG 29KW COMBI | 47-108-05 | 47-108-05 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE-FSN-GB NG 27KW | 47-311-55 | 47-311-55 | — | — |
| WORCESTER CS1 RSF 28KW NG | 41-108-02 | 41-108-02 | — | — |
| WORCESTER GREENSTAR HE FSN ZB 7 27KW NG | 41-311-49 | 41-311-49 | — | — |
| WORCESTER WORCESTER CC1 NATURAL GAS 29KW | — | — | — | |
| WORCESTER WORCESTER CS1 NATURAL GAS 28KW | — | — | — | |
| WORCESTER WORCESTER GREENSTAR HE 27KW SYSTEM NATURAL GAS | — | — | — | |
| WORCESTER WORCESTER GREENSTAR HE RSF 27KW COMBI NATURAL GAS | — | — | — |
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 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.