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Worcester Bosch Code Plug with Diverter Valve 87144310220

Worcester Bosch

Worcester Bosch Code Plug with Diverter Valve 87144310220

Worcester Bosch code plug with diverter valve, part 87144310220, for Greenstar 35CDI ErP Classic System boilers in LPG and NG variants.

At a glance

  • Part type: Code plug with diverter valve
  • Appliance family: Greenstar 35CDI ErP Classic System
  • Also known as 1031395
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87144310220
GC number
J22-825
Showing prices

£25.44

£21.20 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 code plug with diverter valve, part number 87144310220, is a service component used on Greenstar 35CDI ErP Classic System boilers. The code plug section identifies the appliance variant to the control board, while the diverter valve assembly sits in the water circuit and switches flow between central heating and domestic hot water. It is supplied as a single assembly and is fitted inside the boiler casing.

Signs this part needs replacing

  • The diverter valve no longer moves cleanly between the heating and hot water positions
  • Domestic hot water runs cold or intermittent while the central heating continues to work
  • The boiler locks out or flags a fault shortly after a hot water demand starts
  • The valve body shows corrosion, scale build-up or a stiff, sticking actuator
  • The code plug connector is loose, corroded or physically damaged

Before you order

  • Check the GC number on the appliance data badge against the models listed above before ordering
  • Confirm the part number on the existing component and cross-check it with the alternative number 1031395
  • 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.