Worcester Electrodes 87181070870 Now 87161163810

Worcester

The Worcester Electrode Kit (Part No. 87161163810) is a genuine OEM maintenance set essential for the ignition and flame-sensing sequence of Worcester Bosch Greenstar boilers. This kit includes both the ignition electrode (which creates the spark to light the gas) and the ionization/sensing electrode (which confirms to the PCB that a flame is present). Reliable ignition is the foundation of boiler safety and efficiency.
This part is the current authorized replacement for the older reference 87181070870.

Key Features and Specifications
Dual-Function Kit: Contains both sparking and sensing probes to ensure the entire ignition path is refreshed.

High-Temperature Ceramics: The electrodes are encased in premium insulation designed to withstand the intense heat of the combustion chamber without cracking or electrical leakage.

Precision Geometry: Manufactured to the exact dimensions required by Worcester burners to ensure a consistent, strong spark across the gap.

Genuine Worcester Bosch Part: Ensures the correct electrical resistance for the ignition transformer, protecting the main PCB from feedback.

Safety First: Prevents "explosive ignition" and frequent "EA" fault codes by ensuring a clean, rapid light-up.

Boiler Compatibility
This kit is the standard ignition service set for the majority of the Greenstar range, including:

Greenstar CDi (Classic & Highflow): 25CDi, 30CDi, 35CDi, 40CDi, 42CDi.

Greenstar i Junior: 24i Junior, 28i Junior.

Greenstar Si: 25Si, 30Si.

Greenstar Ri: 12Ri, 15Ri, 18Ri, 24Ri.

Important Safety Note: This part must only be installed by a Gas Safe Registered engineer. It is standard practice to replace these electrodes during a major service or if the boiler is suffering from intermittent ignition failure.

Essential Companion Products
To perform a complete combustion service or resolve ignition faults, the following genuine Worcester parts are frequently required alongside this kit:

Gas Sealing: Worcester Gas Valve Gasket – 871860034A0

Exhaust Safety: Worcester Exhaust Seal 59Dia – 8737711102

Secondary Gas Seal: Worcester Gas Valve Gasket – 87161068000

Hardware: Worcester Retaining Nut – 87161066830

Structural Support: Worcester Bracket Gas Valve – 8716117867

Specialist Support and Local Collection
Is your boiler locking out with an EA fault or making a loud "bang" during ignition? Our trade counter team can help your engineer identify whether the issue lies with the electrodes, the lead, or the gas valve.

Visit our trade counter and Bathroom Showroom at 61 Fullers Road, E18 2QB for expert technical advice and immediate access to genuine Worcester Bosch spares.