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Baxi High Voltage Wiring Harness 7812551

Baxi

Baxi High Voltage Wiring Harness 7812551

High voltage wiring harness, part 7812551, for Baxi 424 and 430 Combi 2 appliances.

At a glance

  • Part type: high voltage wiring harness
  • Appliance family: 424 and 430 Combi 2
  • Also known as 1794984
Manufacturer part no.
7812551
Showing prices

£34.07

£28.39 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 Baxi 7812551 is a high voltage wiring harness used in Baxi 424 and 430 Combi 2 appliances. It carries mains-voltage connections between the boiler's electrical components, forming part of the appliance's internal wiring loom. The harness is supplied as a single assembly identified by the manufacturer's part number 7812551.

Signs this part needs replacing

  • The appliance fails to power up or loses mains supply to internal components
  • Intermittent faults or shutdowns that trace back to a loose or damaged harness connection
  • Visible damage to the harness, such as chafed insulation, scorching or exposed conductors
  • Connectors that are cracked, corroded or no longer grip their terminals
  • Fault finding points to an open or broken circuit within the high voltage loom

Before you order

  • Confirm the appliance model and GC number against the fit list above
  • Check the part number on the existing harness or appliance wiring diagram matches 7812551
  • Compare the connector layout and routing of the existing harness with the replacement before fitting
  • Isolate the electrical supply and follow the manufacturer's instructions when replacing the harness

Not sure which part?

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