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Anodes

Which alloy should you use?

Aluminum Alloy (US MIL-A-24779(SH):
  • For use in salt and brackish water
  • Not recommended for use in fresh water
  • Proven to last longer than zinc due to increased capacity
  • Alloy is manufactured to meet or exceed US Military Specification (MIL-A-24779(SH))
Magnesium Alloy (AZ91D):
  • ONLY for use in fresh water
  • Not recommended for use in salt or brackish water
  • The only alloy proven to protect your boat in fresh water!
Zinc Alloy (US Mil-A-18001K):
  • For use in salt water
  • Not recommended for use in fresh water
  • Alloy is manufactured to meet or exceed US Military Specification (MIL-A-18001K)

MerCruiser Anode Kits
Aluminum and Magnesium Anode kits for MerCruiser Alpha and Bravo drives
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