Martyr Anodes CM821631Z Mercury Mercruiser Trim Tab Anode

The Martyr Anodes CM821631Z is a precision-engineered sacrificial anode designed specifically for Mercury Mercruiser stern drives. This trim tab anode provides essential corrosion protection for your drive unit by attracting harmful electrolysis away from critical metal components.

Key Features:

• Direct replacement for Mercury part number 821631
• Manufactured from high-quality aluminum alloy for optimal galvanic protection
• Precisely machined to OEM specifications for perfect fit and function
• Mounts directly to the trim tab assembly
• Protects expensive stern drive components from corrosion damage

Regular inspection and replacement of sacrificial anodes is essential preventative maintenance for any stern drive. This anode should be replaced when approximately 50% depleted to ensure continuous protection. Always verify proper propeller clearance after installation to prevent contact during operation.