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Worcester Bosch Manifold 87186808240

Worcester Bosch

Worcester Bosch Manifold 87186808240

Worcester Bosch hydraulic manifold 87186808240 for Greenstar Compact system boilers; alternative number 1031225.

At a glance

  • Part type: Diverter valves and hydraulics
  • Appliance family: Greenstar Compact system
  • Also known as 1031225
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87186808240
GC number
J10-698
Showing prices

£33.85

£28.21 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 87186808240 is a hydraulic manifold forming part of the diverter valve and hydraulics group on Greenstar Compact system boilers. It sits within the boiler's water circuit, where the hydraulic components manage the movement of water through the appliance. The part is supplied by Worcester Bosch and is listed under the diverter valves and hydraulics category.

Signs this part needs replacing

  • Heating or hot water performance drops away, or the boiler fails to switch between heating and hot water demand.
  • The diverter valve assembly sticks, jams or fails to move through its full travel.
  • Water is visible around the hydraulic block or manifold area, indicating a seal or body failure.
  • The boiler locks out or reports a fault relating to the diverter valve or hydraulic circuit.
  • Unusual noise from the hydraulic section during a demand for heat or hot water.

Before you order

  • Check the GC number on the appliance data badge and confirm the model against the compatibility list before ordering.
  • Compare the part number 87186808240 with the markings on the component being replaced.
  • The alternative number 1031225 may be stamped or printed on the original part.
  • 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.