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Worcester Bosch Flow Regulator E-LP 10 Litre 87186842120

Worcester Bosch

Worcester Bosch Flow Regulator E-LP 10 Litre 87186842120

Flow regulator, E-LP 10 litre, for Worcester Greenstar 28CDi Compact LPG and NG boilers.

At a glance

  • Also known as 1031291
Manufacturer part no.
87186842120
GC number
J04-448
Showing prices

£11.52

£9.60 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

The Worcester Bosch flow regulator E-LP 10 litre (part 87186842120) is a hydraulic component fitted to Greenstar 28CDi Compact gas boilers. It controls the flow rate of water through the appliance circuit, helping the boiler maintain stable operation. It is listed in the flow switch category of gas boiler spares.

Signs this part needs replacing

  • Reduced or erratic domestic hot water flow rate
  • Flow rate drifting away from the specified 10 litre setting
  • Scale or debris build-up restricting flow through the regulator
  • Water weeping or dripping from the regulator body
  • Unstable hot water temperature linked to flow variation

Before you order

  • Confirm the boiler model and GC number against the fitment list
  • Check whether the appliance is LPG or natural gas
  • Compare the part number marked on the existing regulator

Not sure which part?

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