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Worcester Bosch Harness High Voltage 87186904500

Worcester Bosch

Worcester Bosch Harness High Voltage 87186904500

High voltage wiring harness for Worcester Bosch Greenstar RI 27kW and 30kW Compact boilers.

At a glance

  • Also known as HARNESS-HIGH-VOLTAGE, 2247035
Manufacturer part no.
87186904500
Showing prices

£47.50

£39.58 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 Harness High Voltage is a Worcester Bosch wiring harness used on Greenstar RI Compact appliances. It carries the high voltage connections within the boiler's electrical circuit. The part is supplied under Worcester Bosch part number 87186904500.

Signs this part needs replacing

  • Visible scorching, discolouration or heat damage at the harness connectors
  • Cracked, brittle or chafed insulation along the loom
  • Loose or corroded terminals causing intermittent electrical faults
  • Boiler failing to run reliably, with faults tracing back to the high voltage wiring

Before you order

  • Confirm the boiler model and GC number against the fit list above
  • Check the existing harness part number before removing it
  • Inspect connector types and pin count on the old harness to confirm a match
  • Isolate the appliance from the electrical supply before any work

Not sure which part?

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