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Glow-worm Cable Tree Mains Inlet Wiring Harness 0020020777

Glow-worm

Glow-worm Cable Tree Mains Inlet Wiring Harness 0020020777

Mains inlet wiring harness (cable tree) for Glow-worm Flexicom HX, SX and CX boilers.

At a glance

  • Part type: cable tree / mains inlet wiring harness
  • Also known as 1337861
Manufacturer part no.
0020020777
Showing prices

£22.49

£18.74 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 cable tree is the mains inlet wiring harness used on Glow-worm Flexicom boilers. It carries mains supply connections to the boiler's internal components, forming the wiring link between the incoming supply and the appliance's electrical assembly. It is supplied by Glow-worm under part number 0020020777.

Signs this part needs replacing

  • Boiler fails to power up or shows no response at the controls
  • Intermittent electrical faults or loss of supply to internal components
  • Visible damage to the harness, such as scorching, brittle or cracked insulation
  • Loose, corroded or heat-damaged connector terminals on the harness
  • Fault traced to the mains inlet wiring during electrical testing

Before you order

  • Confirm the boiler model against the fitment list above
  • Check the existing harness part number or markings before removal
  • Inspect the connector blocks and terminals for damage that may also need attention
  • Isolate the mains supply before carrying out any inspection or replacement work

Not sure which part?

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