Martyr Anodes CMY200350FLKITM Yamaha 200-350 HP Magnesium Anode Kit with Flat Tab

The Martyr Anodes CMY200350FLKITM is a complete magnesium sacrificial anode kit designed to protect Yamaha 200–350 HP outboard motors from galvanic corrosion in freshwater environments. This kit features a flat tab trim anode configuration, making it the correct choice for counter-rotating or specific Yamaha outboard setups that require a flat-profile tab anode rather than the standard angled trim tab.

Martyr's Martyr III magnesium alloy anodes are engineered exclusively for freshwater use. Magnesium is the most electrochemically active of the three anode materials, providing aggressive cathodic protection necessary in low-conductivity fresh water where zinc anodes can passivate and fail to protect. Do not use magnesium anodes in saltwater or brackish water, as they will corrode too rapidly.

Key Features:

• Magnesium alloy construction — optimized for freshwater use only
• 100% cadmium-free formulation — environmentally responsible
• Manufactured to US Military alloy specifications for consistent, verified performance
• Flat tab trim anode design for compatible Yamaha 200–350 HP outboard configurations
• Chemically tested for alloy consistency and electrochemical efficiency
• Includes all anodes and fastening hardware needed for a complete service
• Drop-in replacement for OEM Yamaha sacrificial anodes

Replacing your outboard's sacrificial anodes at regular service intervals is one of the most cost-effective ways to prevent galvanic corrosion damage to expensive lower unit and engine components. The CMY200350FLKITM bundles all necessary anodes and hardware so the job can be completed in one service session.