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Worcester Bosch Wiring Harness High Voltage 87186900880

Worcester Bosch

Worcester Bosch Wiring Harness High Voltage 87186900880

High voltage wiring harness, part 87186900880, for Worcester Bosch Greenstar Heatslave II ErP oil boilers.

At a glance

  • Also known as 2246959
Manufacturer part no.
87186900880
Showing prices

£117.28

£97.73 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 high voltage wiring harness, part number 87186900880, is an electrical loom used on the Greenstar Heatslave II family of oil-fired condensing boilers. It carries the high voltage connections between the boiler's electrical components, so power reaches the burner, controls and associated parts along the intended route. It is a service part intended for replacement where the original harness is damaged or faulty.

Signs this part needs replacing

  • The boiler fails to power up, or power is intermittent
  • The burner or controls cut out and reset without an obvious fault elsewhere
  • Insulation on the existing harness is chafed, brittle or heat-affected
  • Connector terminals are loose, corroded or discoloured
  • Continuity or voltage faults traced along the harness rather than to a component

Before you order

  • Confirm the boiler model against the fitment list above
  • Check the part number printed or moulded on the existing harness matches 87186900880
  • Compare the connector layout and pin count of the old harness with the replacement
  • Isolate the electrical supply to the appliance before removing or refitting the harness

Not sure which part?

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