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Worcester Bosch Pump UPS 15-50 Cacao 8737604215

Worcester Bosch

Worcester Bosch Pump UPS 15-50 Cacao 8737604215

Circulation pump for Worcester Bosch Greenstar 24 FSN-GB and 28 FSN-GB combi boilers.

At a glance

  • Appliance family: Greenstar FSN-GB combi
  • Also known as 1018244
Manufacturer part no.
8737604215
GC number
J09-209
Showing prices

£360.18

£300.15 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 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 UPS 15-50 Cacao is a circulation pump used in Greenstar FSN-GB combi boilers. It moves water around the heating circuit and through the domestic hot water side of the appliance. It is listed under Worcester Bosch part number 8737604215.

Signs this part needs replacing

  • Boiler fires but radiators stay cold or heat unevenly
  • Pump is noisy, humming, or silent when it should be running
  • Boiler overheats, locks out, or shows a circulation-related fault
  • Domestic hot water temperature is inconsistent
  • Leaks or corrosion visible around the pump body

Before you order

  • Check the boiler data badge to confirm the model is a Greenstar 24 FSN-GB or 28 FSN-GB Combi NG.
  • Compare the model marking on the existing pump with UPS 15-50 Cacao.
  • Confirm part number 8737604215 against the manufacturer's parts list for your appliance.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.