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Electrodes

Part number (MPN)
Z3005721
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Type your appliance model: we compare it with the 21 appliances in our sources.

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Parts for the same appliances

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Source
retailer parts list
checked 2026-11-06
Fitting notes

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

Compatible appliances

Always check the model and serial number on the data plate before ordering.

Frequently asked questions

Which appliances does Z3005721 fit?

The sources we checked list Z3005721 (Electrodes, Riello) for: Riello 40 419T55, Riello 40 422T56, Riello 40 424T55, Riello 40 436T56, Riello 40 437T55, Riello 40 G2 426T50, Riello 40 G2 426T50 3742650, Riello 40 G2S 424T50, Riello 40 G2S 424T50 3742450, Riello 40 G2S 424T50 3742451, Riello 40 G2SX 424T55, Riello 40 G3 437T50 3743750, Riello 40 G3B 437T50, Riello G2Q 422T55 3742256, Riello G2Sx 419T55 3741955, Riello G2Sx 424T55 3742455, Riello G2X 422T51 3742251, Riello G3Q 436T55 3743656, Riello G3X 436T51 3743651, Riello Mectron 2M Gb 179T12, Riello Mectron 3Bm Gb 169T12. Always check the model and serial number on the data plate before ordering.

Does Z3005721 have equivalent or superseded part numbers?

The sources we checked list no equivalents for Z3005721. Ask a Riello stockist to confirm.

What should I check before fitting Z3005721?

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

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Some lists are dated and the part may have been superseded. Information only, compatibility not guaranteed.