Home > FAQ > What happened to my zinc anodes?

Sometimes, mid-season my zincs are gone. Did they fall off?

Before image of a B&S streamline collar zinc next to an evenly worn after image of the same zinc.As far as "missing zincs" midseason, often times our customers tell us there was nothing left but the bolts. That's a good thing, because the anodes are doing their job. Unfortunately, you may need to check your anodes more often if they are dissolving before your boating season ends to make sure your boat is protected all season.


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  1. What are zinc anodes?
  2. I hear a lot about aluminum anodes; should I use aluminum anodes or zinc anodes?
  3. What kind of zinc does B&S use?
  4. There's a lot of emphasis on "hand-poured" zinc anodes on your website. Why does B&S Marine Anodes hand pour their zincs? How are other zincs made?
  5. How often should you change your anodes?