Baxi Broag S57783 Ignition and Ionisation Electrode, Boiler Igniter, Flame Sensor, Replacement Boiler Spare Part Number: S57783

Baxi Broag S57783 Ignition and Ionisation Electrode, Boiler Igniter, Flame Sensor, Replacement Boiler Spare

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£83.11
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Baxi Broag S57783 Ignition and Ionisation Electrode, Boiler Igniter, Flame Sensor, Replacement Boiler Spare Part Number: S57783
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Baxi Broag S57783 Ignition and Ionisation Electrode, Boiler Igniter, Flame Sensor, Replacement Boiler Spare

SKU W-481321
Manufacturer part number
S57783
£83.11
inc VAT£69.26 ex VAT
Lead time: 1-5 working days

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Product: Baxi Broag S57783 Ignition and Ionisation Electrode, Boiler Igniter, Flame Sensor, Replacement Boiler Spare (Part no. W-481321)

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Description

Short Introduction

The Baxi Broag S57783 ignition and ionisation electrode is a genuine boiler spare designed to create the ignition spark and sense the burner flame for safe operation. It helps restore reliable start-up and stable running when an existing electrode is worn, cracked or failing. Ideal for fast, accurate boiler repairs and planned maintenance.

Key Features

  • Ignition and flame sensing in one component – supports dependable burner ignition and safe flame proving.
  • Direct replacement spare – designed for straightforward swap-out to get heating and hot water back quickly.
  • Helps resolve common fault symptoms – can reduce issues such as ignition lockouts, intermittent flame failure and repeated reset cycles.
  • Genuine Baxi Broag part – improves confidence in fit and performance versus non-genuine alternatives.

Use Case / Application

Designed for use within compatible Broag and Baxi boiler systems as the ignition electrode and ionisation (flame sensor) electrode. Typically fitted inside the combustion chamber area and used during servicing or breakdown repair.

Examples of where it is used:

  • Domestic boiler repairs in homes, flats and rental properties
  • Planned boiler servicing and preventative maintenance
  • Restoring operation after flame sensing faults or ignition issues

Problem → Solution

Ideal for boilers suffering from ignition failure or flame detection faults, where replacing the electrode helps restore safe, reliable ignition and operation.

Product Specifications

  • Manufacturer – Baxi
  • Manufacturer Part Number (MPN) – S57783
  • Product Type – Ignition and Ionisation Electrode (boiler electrode / flame sensor)
  • Typical Applications / Use Cases – Boiler repair and servicing; ignition spark generation and flame sensing on compatible boiler models

Why Buy from BHL

Baxi parts are widely trusted across the heating industry for dependable performance and quality engineering, and the S57783 electrode is a key component for safe ignition and flame sensing. Buy online from BHL for competitive pricing, genuine parts and free and fast UK delivery* direct from our UK warehouses, delivered with care. BHL are a specialist online merchant, trusted by thousands of satisfied customers online since 1998 with thousands of 5 star reviews. Order the Baxi Broag S57783 today for a smooth, reliable repair.

*see our terms

Reviews

Buying guide: Boiler Spares

Boiler spares are replacement parts for gas, LPG and oil boilers: printed circuit boards, fans, gas valves, pumps, diverter valves, heat exchangers, sensors, pressure gauges, burners, electrodes, seals, casing panels and flue parts. Most are made for one manufacturer, and often for a narrow range of models, so identifying the boiler correctly matters more than anything else.

Identify the boiler first

Find the data badge, usually behind the front panel or under the controls cover. It shows the manufacturer, the model and the GC (Gas Council) number, a seven-digit reference for the exact appliance. Natural gas and LPG versions of the same boiler usually have different GC numbers, and parts can change between production runs, so the GC number and serial number are the safest way to match a part. The boiler's installation and servicing manual lists the parts for each model.

Part numbers and replacements

Search by the manufacturer's part number where you have it. Manufacturers sometimes replace a part with a newer version under a new number; only use a replacement that the manufacturer lists for your model. Some repairs need a kit rather than a single part, for example a part supplied with new seals or fixings.

Safety

By law, work on gas boilers and their gas parts must be carried out by a Gas Safe registered engineer qualified for that type of appliance; ask to see their ID card before work starts. Oil boilers should be worked on by a suitably qualified technician.

For thermostats and programmers, see heating controls.

Shop all Boiler Spares

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