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Anodes and Corrosion Prevention

Anodes and Corrosion Prevention


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)
Anode Bolt Kits
Anode Bolt Kits
Galvanic Isolators
Galvanic Isolators
Grouper Anodes
Grouper anodes clip directly to engine bolt, outdrive bolt or grounding strap to provide protection against corrosion from stray current in fresh, salt, or brackish water. A great supplimental protection at the dock.
Hull Anodes
Aluminum, magnesium, and zinc Martyr anodes protects boat hulls from corrosion in salt, brackish, and fresh water applications.
Outboard and I/O Anodes
Outboard and inboard/outboard anodes
Outboard Anode Kits
Outboard Anode Kits
Pencil Anodes
Aluminum, Magnesium, and zinc sacrificial anodes reduce the corrosive affects of salt, brackish, and fresh water on marine engines.
Rudder and Trim Tab Anodes
Rudder and Trim Tab Anodes
Sea Strainer Anodes
Sea Strainer Anodes
Shaft Anodes
Aluminum, magnesium, and zinc anodes protect inboard boat's prop shaft from corrosion in fresh, salt or brackish water.
Sterndrive Anode Kits
Martyr sterndrive anode kits includes anodes needed to protect MerCruiser and Volvo drives from corrosion in fresh, salt, and brackish water applications.
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