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Glow-worm Electrode Flexicom SX HX CX 0020020731

Glow-worm

Glow-worm Electrode Flexicom SX HX CX 0020020731

Glow-worm electrode for Flexicom SX, HX, CX and BG330 series boilers, part number 0020020731.

At a glance

  • Part type: Electrodes
  • Also known as 1337777
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
0020020731
Showing prices

£22.97

£19.14 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Glow-worm 0020020731 is an electrode assembly used in the ignition and flame detection system of Glow-worm boilers. It is part of the Flexicom SX, HX, and CX ranges, as well as BG330 series models. The electrode provides the spark to ignite the gas and helps monitor the flame during operation. Over time, electrodes can become fouled or damaged, leading to ignition problems.

Signs this part needs replacing

  • Boiler fails to ignite or locks out.
  • Intermittent ignition or flame detection faults.
  • Visible damage, cracks, or heavy carbon build-up on the electrode.
  • Spark is weak or absent when calling for heat.
  • Repeated flame failure lockouts.

Before you order

  • Check your appliance's GC number against the compatibility list.
  • Confirm the part number 0020020731 or alternative 1337777.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.