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Osculati 43.420.11 – Mercury 31640 & Honda 41107-ZW1-003ZA Magnesium Fin Anode (7/16" Thread)
The Osculati 43.420.11 is a premium magnesium fin anode developed for 2-stroke and 4-stroke Mercury and Honda outboard engines in the 40–225 HP range. This anode is engineered for use in freshwater environments, where magnesium offers superior reactivity and corrosion protection over zinc or aluminium.
It is a direct OEM replacement for Mercury part 31640 and Honda part 41107-ZW1-003ZA, and is equipped with a standard 7/16" UNC thread. The integrated fin assists in counteracting propeller-induced steering torque, improving handling and hydrodynamic stability.
Key Features:
- OEM equivalent: Mercury 31640, Honda 41107-ZW1-003ZA
- Thread: 7/16" UNC (standard)
- Material: High-reactivity magnesium alloy
- Designed for freshwater use only
- Provides sacrificial protection against galvanic corrosion
- Integrated fin design for torque compensation
- Lightweight, eco-friendly, and highly efficient
Technical Specifications:
Parameter Value Article Number Osculati 43.420.11 OEM Compatibility Mercury 31640, Honda 41107-ZW1-003ZA Thread Size 7/16" UNC Engine Compatibility 40–225 HP (2-stroke and 4-stroke) Material Magnesium Recommended Use Freshwater only
Applications:
- Mercury outboards (40–225 HP, 2T and 4T)
- Honda outboards using 41107-ZW1-003ZA fin anodes
- Freshwater lakes, rivers, and reservoirs
- Steering torque reduction and corrosion protection
The Osculati 43.420.11 magnesium fin anode provides the most efficient corrosion protection available for freshwater boaters using Mercury or Honda outboards, ensuring long-term performance and structural preservation in low-conductivity conditions.
Documents
Osculati Catalogue 2025 - page 770 Size: 390,7 Kb -