Chaffoteaux Anode D.21 3 L.110 M5-M8 65103768-01

The Chaffoteaux 65103768-01 is a sacrificial anode supplied for Ariston and Chaffoteaux appliances. It carries the dimensional reference D.21; 3 L.110 M5-M8, which identifies the anode body size and the M5-M8 threaded connection used to mount it. The anode is a consumable corrosion-control component: it is deliberately the part that corrodes in preference to the surrounding metalwork, protecting the appliance's wetted surfaces for as long as the anode material remains.

• The anode has visibly thinned, pitted or broken down when inspected or removed
• Rust-coloured or discoloured water at the hot outlet
• Corrosion or weeping around the anode connection point
• The anode has been in service for the interval recommended for the appliance and has not been checked
• Metallic debris or scale build-up found around the anode location during servicing

• Confirm the appliance model and serial number from the data badge, then match the part number against the compatibility information
• Check the existing anode's dimensional reference and thread before removal, as the D.21; 3 L.110 M5-M8 marking identifies the correct variant
• Have a suitable sealing washer or gasket to hand if the existing one is disturbed during removal
• Note the alternative numbers 1615058 and 65103768 when cross-referencing older documentation