ARISTON Magnesium Anode M8 Ø21.3×1000 mm, 200 L, 291087

ARISTON 291087 is a magnesium sacrificial anode for water heaters, designed to protect the water-heater tank against electrochemical corrosion. During operation, the magnesium anode gradually wears away, taking the corrosive effect upon itself and helping protect the metal tank.

The anode has a diameter of 21.3 mm, a length of 1000 mm and an M8 mounting thread. These specifications correspond to spare-part number 291087.

The part is used in several 200-litre ARISTON / Chaffoteaux Group water heaters, including selected AR 200 V, TI 200/L and TANK GAZ 200L models. Exact compatibility should be verified using the specific appliance model and existing anode mounting.

A magnesium anode is a consumable component. Its wear rate depends on water chemistry, hardness, operating temperature and the intensity of water-heater use, therefore its condition should be inspected periodically.

Timely replacement of a worn magnesium anode helps reduce the risk of tank corrosion and maintain effective corrosion protection. During servicing, it is also advisable to inspect the heating element, gaskets and internal tank surface.

When selecting a replacement anode, both the Ø21.3 × 1000 mm dimensions and the M8 mounting thread should be checked. Article 291087 is intended for specific large-capacity water-heater models, so the spare-part number should be compared before ordering.

Technical information