Anode kits are essential for protecting outboard engines, sterndrives, and other submerged boat components from galvanic corrosion.
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1-2 weeks delivery time Magnesium support anode designed for Yamaha 100–300 HP outboards, OEM reference 6G5-45251-01/02. Ideal for freshwater applications, it mounts on the lower unit or support bracket, delivering highly active galvanic protection in low-conductivity environments. Magnesium ensures fast and reliable corrosion control, safeguarding critical engine components during inland water use.
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€ 27,91
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1-2 weeks delivery time Oblong zinc anode compatible with Yamaha outboards, OEM reference 6AW-45251-00. Designed for installation on the gear housing or lower unit, this anode ensures long-term galvanic protection in saltwater environments. Zinc remains the most widely used anode material for traditional marine conditions, offering reliable corrosion resistance for submerged metal surfaces.
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€ 21,88
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1-2 weeks delivery time OEM-style aluminium oblong anode for Yamaha outboards, reference 6AW-45251-00. Designed to protect the lower unit or gear housing, this anode offers efficient corrosion resistance in saltwater and brackish water. Aluminium provides longer service life, lighter weight, and reduced environmental impact compared to zinc, making it ideal for modern marine use.
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€ 16,88
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1-2 weeks delivery time Magnesium oblong anode compatible with Yamaha outboards, OEM reference 6AW-45251-00. Engineered for installation on the gear housing or lower unit, this anode provides superior galvanic protection in freshwater environments. Magnesium's high electrochemical activity ensures rapid and efficient corrosion defense in low-conductivity inland waters.
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€ 25,96
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1-2 weeks delivery time Zinc rod anode designed for Yamaha outboards (OEM 6H1-45251-03) and Selva engines from 25 to 100 HP. This anode is typically inserted into the cooling water passages to prevent galvanic corrosion inside the engine block and cylinder head. Ideal for saltwater environments, it provides essential internal protection for long-term engine reliability.
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€ 17,39
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1-2 weeks delivery time Aluminium rod anode for Yamaha outboards (OEM 6H1-45251-03) and Selva 25–100 HP engines. Designed for internal installation in cooling water channels, this anode protects against galvanic corrosion inside the cylinder head and engine block. Ideal for saltwater and brackish environments, aluminium offers long-lasting, eco-friendly protection with lower mass and greater efficiency than zinc.
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€ 11,26
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1-2 weeks delivery time Magnesium rod anode for Yamaha 6H1-45251-03 and Selva 25–100 HP outboards. Specifically designed for freshwater use, this internal anode is installed in the engine’s cooling passages to protect against galvanic corrosion inside the cylinder head and block. Magnesium offers the highest electrochemical activity, ensuring rapid and efficient protection in low-conductivity environments like lakes and rivers.
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€ 15,65
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1-2 weeks delivery time Zinc anode with threaded plug, OEM reference Yamaha N51-11325-01, for use in onboard and outboard engines. Installed in the cooling water passages of the engine block, this anode protects internal components from galvanic corrosion in saltwater. The integrated plug design ensures secure fitment and easy replacement during maintenance.
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€ 14,19
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1-2 weeks delivery time Magnesium fin anode for Yamaha outboards 20–50 HP, OEM reference 664-45371-01, with 94 mm diameter. Designed for mounting under the anti-ventilation plate, it offers effective galvanic protection and steering torque correction in freshwater environments. Magnesium ensures the highest activity for internal and external protection in low-conductivity water.
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€ 23,80
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1-2 weeks delivery time Zinc fin anode for Yamaha 50–90 HP outboards, OEM ref. 688-45371-02. With a 90 mm diameter, this trim anode installs under the anti-ventilation plate, providing protection against galvanic corrosion and reducing propeller torque. Made of high-purity zinc, it ensures optimal performance in saltwater environments.
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€ 16,07
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1-2 weeks delivery time Aluminium fin anode for Yamaha 50–90 HP outboards, OEM reference 688-45371-02. With a 90 mm diameter, this anode mounts under the anti-ventilation plate and provides dual functionality: corrosion protection and propeller torque compensation. Aluminium is optimal for saltwater and brackish environments, offering excellent durability, low mass, and eco-friendliness compared to zinc.
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€ 13,73
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1-2 weeks delivery time Zinc plate anode for Yamaha outboards 200–350 HP, OEM reference 6AW-45619-00. Mounted directly on the engine bracket or transom area, this anode delivers robust corrosion protection in saltwater environments. Its flat, wide-profile design ensures optimal surface coverage and durability for heavy-duty marine use.
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€ 21,45
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1-2 weeks delivery time Aluminium plate anode for Yamaha outboards 200–350 HP, OEM reference 6AW-45619-00. Installed on the engine bracket or transom, it provides efficient galvanic protection in saltwater and brackish conditions. Aluminium offers a lightweight, durable, and eco-friendly alternative to zinc, ensuring long-term defense against electrolysis and structural corrosion.
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€ 16,12
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1-2 weeks delivery time Magnesium plate anode for Yamaha 200–350 HP outboards, OEM reference 6AW-45619-00. Designed for installation on the engine bracket or transom, it provides maximum galvanic protection in freshwater environments. Magnesium is the most reactive anode material, making it ideal for low-conductivity inland waters such as lakes and rivers.
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€ 26,10
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1-2 weeks delivery time Osculati 43.259.01 – Yamaha 6G1-45251-03-6N0-65251-00 is a plate-style sacrificial anode designed for Yamaha 6C, 6D, and 8C outboard engines. Manufactured from high-quality zinc, it ensures reliable protection against galvanic corrosion in saltwater environments. With precise fitment and OEM-grade casting, it replaces the original Yamaha parts 6G1-45251-03 and 6N0-65251-00 without modifications. Dimensions: 65 mm x 35 mm x 12 mm.
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€ 24,60
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1-2 weeks delivery time Osculati 43.260.01 – Yamaha 688-45251-01 is a zinc ring anode with dimensions Ø 24 × 15 mm, specifically designed to fit Yamaha outboard engines for shaft protection. Manufactured to match OEM specifications, this anode prevents galvanic corrosion by acting as a sacrificial element in saltwater environments. It ensures reliable protection of propeller shafts and related components, with precise machining for easy installation.
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€ 16,37
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1-2 weeks delivery time Osculati 43.260.02 – Yamaha 67C-45251-00 / 63D-45251-10 & Selva is a zinc leg anode designed to protect the submerged lower unit of Yamaha and Selva outboard engines from galvanic corrosion. Precisely cast to match OEM references, it provides reliable sacrificial protection in saltwater environments. Ideal for various mid-range Yamaha and compatible Selva models, it ensures secure mounting and easy replacement without modification.
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€ 29,97
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1-2 weeks delivery time Osculati 43.260.03 – Yamaha 65W-45251-00 / 6E0-45251-12 & Selva is a bridge-type zinc anode with a 6.5 mm central bore, engineered to protect 4-stroke Yamaha and Selva outboards from 4 to 70 HP. Designed for installation on the engine leg, this anode prevents galvanic corrosion in saltwater by sacrificing itself to protect aluminum and steel components. Manufactured to OEM spec for exact fit.
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€ 11,07
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1-2 weeks delivery time Osculati 43.260.04 – Yamaha 68T-45251-00 & Selva is a zinc leg anode designed to protect lower units of Yamaha and Selva 4-stroke outboard motors in the 6 to 9.9 HP range. Engineered to OEM specifications, it replaces Yamaha part 68T-45251-00 and fits precisely without modification. Made of high-purity zinc for saltwater environments, this anode prevents galvanic corrosion by sacrificing itself to protect vital metal components.
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€ 9,89
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1-2 weeks delivery time Osculati 43.260.05 – Yamaha 68V-11325-01 is a zinc cylinder anode for Yamaha outboard motors in the 80 to 225 HP range. Designed for internal engine use, typically inside the cooling water jacket, it prevents internal corrosion caused by electrolysis. Manufactured to OEM standards, it fits directly in place of Yamaha part 68V-11325-01, ensuring effective protection for vital engine components exposed to saltwater cooling circuits.
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€ 27,56
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What is an outboard engine anode, and how does it protect a motor from galvanic corrosion?
An outboard engine anode is a sacrificial metal component, such as a trim tab anode or shaft anode, designed to protect the motor from galvanic corrosion by attracting corrosive elements in the water. Installed on parts like the motor's ventilation plate, transom bracket, or propeller shaft, the anode corrodes instead of critical engine components, extending the lifespan of the outboard motor, especially in saltwater and brackish environments. Regular anode replacement ensures continuous protection for the boat motor and other submerged parts.
What is the importance of regularly replacing outboard motor anodes for corrosion protection?
Regularly replacing outboard motor anodes is essential to prevent galvanic corrosion, which can damage critical components like the engine, propeller, and transom bracket. Sacrificial anodes, such as bar anodes, trim tab zinc anodes, and ring anodes, corrode instead of the motor, protecting metal parts from deterioration in saltwater, brackish water, and freshwater. Using the correct alloy anode ensures long-term protection for outboards and boat zinc components, extending the engine’s lifespan and maintaining performance.
What factors determine the choice between aluminum, magnesium and zinc anode for boats?
The choice between zinc, aluminum, and magnesium anodes depends on the water environment where the boat operates. Zinc anodes are ideal for saltwater, aluminum anodes provide effective protection in both saltwater and brackish water, while magnesium anodes are best suited for freshwater. Using the correct anode ensures that essential components like outboard engines, transom brackets, and skegs are protected from galvanic corrosion, extending the lifespan of boat anodes and motor parts.
Additionally, proper maintenance of the cooling system, including timely Honda Impeller Replacement, helps prevent overheating and ensures efficient engine operation.