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SD20 Internal Anode (Fresh Water)

Posted: Mon Oct 21, 2019 1:52 pm
by Mvallus
Does anyone know who stocks replacement internal magnesium anodes for the sail drive? I sail in Freshwater. Perhaps I should just replace it with the basic zinc version, which seems to be more available.

Re: SD20 Internal Anode (Fresh Water)

Posted: Fri Nov 01, 2019 12:02 pm
by TSweather
In fresh water you absolutely need to use the correct anodes or the aluminum saildrive will take on the role of the sacrificial part. Any Yanmar dealer will have the magnesium anodes you need. definitely sells them, though I just go through our local yard RCR yachts in Buffalo.

They should be changed annually as once they degrade too badly they can fall apart inside the saildrive or can require some serious work to remove. Ours is pretty eaten up each year, which means it's doing its job.

Re: SD20 Internal Anode (Fresh Water)

Posted: Tue Nov 26, 2019 8:49 pm
by Mvallus
Thank you for the advice...FYI, boatzincs now have the magnesium version back in stock: