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Worcester Bosch Cable Main 87186809520

Worcester Bosch

Worcester Bosch Cable Main 87186809520

Main wiring cable for Worcester Bosch Greenstar i Junior, i System and Si combi boilers built after FD 887.

At a glance

  • Also known as 1022614
Manufacturer part no.
87186809520
GC number
723-381
Showing prices

£21.28

£17.73 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 cable main is the primary wiring harness used on Worcester Bosch Greenstar boilers, carrying power and control connections between the boiler's internal components and the appliance wiring centre. It is supplied by Worcester Bosch under part number 87186809520 and is specified for units built after FD 887. It is a wiring component, not a consumable, and is replaced when the existing harness is damaged or has failed.

Signs this part needs replacing

  • The boiler loses power intermittently or will not power up at all
  • Visible damage to the cable insulation, such as cracking, chafing or scorch marks
  • Discoloured or burnt connector pins or terminals on the harness
  • Fault codes or control faults traced to a broken or intermittent wiring connection
  • Continuity testing shows an open or intermittent circuit in the harness

Before you order

  • Confirm the boiler model and GC number against the fitment list above
  • Check the appliance FD number, as this part is specified for units after FD 887
  • Inspect the existing harness and connector type before ordering to confirm the fault lies with the cable
  • Isolate the electrical supply to the boiler before carrying out any inspection or replacement work

Not sure which part?

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