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Vaillant Wiring Harness 0020135154

Vaillant

Vaillant Wiring Harness 0020135154

Vaillant wiring harness 0020135154 for ecoTEC PLUS 612, 615, 618, 624, 824 and 831 gas boilers.

At a glance

  • Appliance family: ecoTEC PLUS
  • Also known as 1383495
Manufacturer part no.
0020135154
Showing prices

£75.86

£63.22 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 Vaillant 0020135154 is a wiring harness used in Vaillant ecoTEC PLUS gas boilers. It carries electrical connections between the boiler's control components, forming part of the appliance's internal wiring loom. It is listed under wiring spares for the ecoTEC PLUS range.

Signs this part needs replacing

  • Visible damage to the harness insulation, such as cracking, chafing or exposed conductors.
  • Heat damage, scorching or discolouration at the plug or connector ends.
  • Intermittent boiler operation or faults that change when the loom is moved.
  • Loose, corroded or poor-fitting connectors on the harness.
  • Repeated electrical faults traced to the harness during diagnosis.

Before you order

  • Confirm your boiler model and variant, including any R1 or R2 suffix, against the fit list.
  • Check the part number on the existing harness or the manufacturer's parts list for your appliance.
  • Inspect the connectors and routing on the existing harness so the replacement matches the installation.
  • Confirm the boiler's GC number where available to identify the correct build.

Not sure which part?

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