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Worcester Bosch Module Wiring Harness 87186813740

Worcester Bosch

Worcester Bosch Module Wiring Harness 87186813740

Module wiring harness for Worcester Greenstar Fs and Highflow CDI boilers, part number 87186813740.

At a glance

  • Also known as 1022641
Manufacturer part no.
87186813740
GC number
H71-349
Showing prices

£39.61

£33.01 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 Worcester Bosch module wiring harness (part number 87186813740) is a wiring loom that links the boiler control module to the appliance's electrical system. It carries power and signal between the module and the components it controls. The part is used across Worcester Greenstar Fs CDI regular and Greenstar Highflow CDI models, in both natural gas and LPG versions.

Signs this part needs replacing

  • The boiler fails to fire or locks out intermittently with no other fault identified
  • Fault codes relating to module communication or lost signal
  • Visible damage to the loom, such as chafed, brittle or heat-damaged insulation
  • Loose, corroded or discoloured pins at the module connector
  • Intermittent operation that changes when the harness is disturbed

Before you order

  • Confirm your appliance model against the fit list above
  • Check the connector type and pin count on the existing harness match the new part
  • Establish whether your appliance is the ErP or non-ErP version
  • Isolate the electrical supply before fitting

Not sure which part?

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