Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Worcester Bosch Wiring Harness Assembly HV & Ignition 87186908270

Worcester Bosch

Worcester Bosch Wiring Harness Assembly HV & Ignition 87186908270

HV and ignition wiring harness assembly for Worcester Bosch Greenstar Compact and CDI boilers, part 87186908270.

At a glance

  • Part type: Wiring harness (HV and ignition)
  • Also known as 2247093
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87186908270
Showing prices

£62.77

£52.31 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 87186908270 is a high-voltage (HV) and ignition wiring harness assembly used on Worcester Bosch Greenstar gas boilers. It carries the high-voltage supply and the ignition circuit between the boiler's control electronics and the ignition electrode, allowing the electrode to spark and the burner to light. The harness is supplied as a complete assembly with its connectors already fitted.

Signs this part needs replacing

  • The boiler fails to light, with no spark at the ignition electrode.
  • Ignition lockout or flame-failure faults that return after resetting the appliance.
  • Cracked, brittle or heat-damaged insulation along the harness leads.
  • Loose, corroded or discoloured terminals at the electrode or the control board.
  • Visible arcing marks or a burnt smell around the ignition lead.

Before you order

  • Check the boiler's GC number and model against the compatibility list; more than one harness variant is used across the Greenstar range.
  • Quote the alternative number 2247093 when cross-referencing older documentation or parts listings.
  • 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.