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Worcester Bosch Electrode Set Greenstar CDI 8716121817

Worcester Bosch

Worcester Bosch Electrode Set Greenstar CDI 8716121817

At a glance

  • Part type: Electrode set (ignition and flame sensing)
  • Appliance family: Greenstar CDI
  • Also known as WB8716121817, 1020146
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
8716121817
GC number
E92-572
Showing prices

£74.26

£61.88 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

This is a Worcester Bosch electrode set, supplied under part number 8716121817, for boilers in the Greenstar CDI range. The set covers both roles in the burner: the ignition electrode produces the spark that lights the gas, and the flame sensing electrode monitors whether a flame is actually present. Together they let the boiler prove combustion has taken place before continuing to supply gas to the burner.

Signs this part needs replacing

  • Boiler locks out or fails to fire, with no spark at the burner
  • Repeated ignition attempts followed by a fault code on the display
  • Flame lights briefly then goes out because the sensing electrode cannot confirm a flame
  • Cracked, eroded or heavily carboned electrode tips visible on inspection
  • Intermittent starting that worsens over time

Before you order

  • Check the GC number and appliance model against the compatibility list to confirm the set suits your boiler.
  • Compare your existing part against the previous numbers listed below, as earlier versions of this electrode set were issued under different codes.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

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