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Worcester Bosch Condensate Pump Spares Kit 87186906700

Worcester Bosch

Worcester Bosch Condensate Pump Spares Kit 87186906700

Worcester Bosch condensate pump spares kit, part 87186906700, for Greenstar Highflow 440 appliances; mixed plastics and metals construction.

At a glance

  • Part type: Pump
  • Also known as 1030749
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87186906700
GC number
H21-238
Showing prices

£955.33

£796.11 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 condensate pump spares kit, supplied under part number 87186906700. It is a pump assembly component intended for the Worcester Bosch Greenstar Highflow 440 range, where the pump sits within the appliance and moves heated water around the sealed heating circuit. In combi and highflow layouts the pump is typically positioned ahead of the diverter valve so circulation is maintained through the system.

Signs this part needs replacing

  • The appliance fails to circulate, with radiators staying cold while the boiler fires
  • Overheating or a high-limit lockout shortly after demand begins
  • Unusual whining, humming or grinding from the pump housing
  • Water weeping from around the pump body or its seals
  • Intermittent operation, where the pump starts and stops without a clear pattern

Before you order

  • Check the GC number and appliance serial plate to confirm the model before ordering
  • Compare the previous part numbers listed below against the pump currently fitted
  • Inspect the pump seals and gaskets while the appliance is open, as these are commonly disturbed during replacement
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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