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Worcester Bosch Code Plug Natural Gas 87144210400

Worcester Bosch

Worcester Bosch Code Plug Natural Gas 87144210400

Natural gas code plug for Worcester Bosch Greenstar RI boilers, fitted after FD587 to set the appliance for NG operation.

At a glance

  • Also known as 1012941
Manufacturer part no.
87144210400
GC number
H31-609
Showing prices

£7.64

£6.37 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 code plug is a Worcester Bosch component supplied in the natural gas variant for the Greenstar RI boiler family. It is fitted to appliances built after FD587 and configures the boiler's control electronics for natural gas operation. The part carries the manufacturer reference 87144210400.

Signs this part needs replacing

  • The boiler does not recognise the correct fuel type after a PCB change or gas conversion
  • Combustion readings are incorrect or the appliance will not set up as expected
  • The boiler fails to fire or locks out following control board work
  • The existing code plug is missing, cracked or has damaged pins
  • A replacement board has been fitted and the appliance needs reconfiguring for natural gas

Before you order

  • Confirm the boiler's FD number is after FD587
  • Check the appliance model and that it is a natural gas (NG) unit
  • Compare the part number on the existing code plug with 87144210400
  • Confirm whether a new code plug is required alongside any PCB replacement

Not sure which part?

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