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Baxi Wiring Harness Kit 5113414

Baxi

Baxi Wiring Harness Kit 5113414

Low/high voltage wiring harness kit for the Baxi Combi 133HE PLUS gas boiler.

At a glance

  • Appliance family: Combi 133HE PLUS
  • Also known as 1117964
Manufacturer part no.
5113414
GC number
H13-943
Showing prices

£317.58

£264.65 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 5113414 is a low/high voltage wiring harness kit for the Baxi Combi 133HE PLUS gas boiler. It carries the electrical connections between the boiler's control components and the low and high voltage circuits. The harness is supplied as a kit for service and repair work on this appliance.

Signs this part needs replacing

  • Intermittent boiler operation or faults that come and go with movement of the wiring
  • Error codes or lockouts linked to control or voltage circuit faults
  • Brittle, cracked or heat-damaged connector housings and plugs
  • Chafed, scorched or exposed conductors on the harness
  • Boiler failing to power up or respond to the controls

Before you order

  • Confirm your appliance is a Baxi Combi 133HE PLUS.
  • Check the existing harness and connectors against part number 5113414.
  • Inspect the connector plugs and terminals for damage before fitting.
  • Isolate the electrical supply 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.