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 The Osculati 43.362.00 zinc anode kit is specifically designed for MerCruiser Bravo III sterndrives from model year 2004 onwards. This 6-piece set includes OEM-referenced components (762144 + 762145 + 865182 + 821630 + 806190×2) and provides full galvanic protection to the cavitation plate, gearcase, trim rams, and transom mount. Manufactured from high-purity zinc, it ensures long-term defense in saltwater conditions.
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$ 191.39
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1-2 weeks delivery time The Osculati 43.362.01 aluminium anode kit is designed for MerCruiser Bravo III sterndrives from model year 2004 onwards. This 6-piece OEM-equivalent set (762144 + 762145 + 865182 + 821630 + 806190×2) offers complete galvanic protection using cadmium-free aluminium alloy, ideal for saltwater and brackish environments. Lightweight and long-lasting, it safeguards upper and lower plates, gearcase, trim rams, and transom areas.
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$ 96.07
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1-2 weeks delivery time The Osculati 43.362.02 magnesium anode kit is tailored for MerCruiser Bravo III sterndrives built from 2004 onward. This 6-piece set (762144 + 762145 + 865182 + 821630 + 806190×2) is optimized for freshwater environments. Magnesium offers superior protection in low-conductivity water, providing rapid electrochemical activity to shield the cavitation plates, gearcase, trim rams, and transom areas from galvanic corrosion.
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$ 191.26
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1-2 weeks delivery time Zinc directional fin anode for Yamaha 225–300 HP outboards, equivalent to OEM reference 61A-45371-00. With a diameter of 100 mm, it mounts under the anti-ventilation plate to provide efficient galvanic protection in saltwater environments. Its hydrodynamic fin design also stabilizes steering by offsetting propeller torque.
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$ 60.70
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1-2 weeks delivery time Aluminium directional fin anode for Yamaha 225–300 HP outboard engines, equivalent to OEM reference 61A-45371-00. With a 100 mm diameter, it mounts beneath the anti-ventilation plate to reduce steering torque and protect submerged metal components from galvanic corrosion. Optimized for use in saltwater and brackish environments, aluminium offers high durability with less environmental impact than zinc.
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$ 33.89
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1-2 weeks delivery time Magnesium fin anode compatible with Yamaha 225–300 HP outboards, OEM reference 61A-45371-00. With a 100 mm diameter and directional fin design, it fits under the anti-ventilation plate and provides high-efficiency galvanic protection in freshwater environments. The magnesium composition delivers the strongest protective current, ideal for low-conductivity inland waters.
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$ 57.18
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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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$ 37.58
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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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$ 37.58
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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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$ 54.40
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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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$ 37.70
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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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$ 57.59
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1-2 weeks delivery time The Osculati 43.260.43 zinc anode is designed as a direct replacement for Yamaha OEM part numbers 65W-45251-00 and 6EO-4525112. Compatible with Yamaha 4-stroke outboard engines from 4 to 70 HP, this bridge-type sacrificial anode features an M5 thread and compact profile for easy installation. Made of high-purity zinc, it provides reliable galvanic corrosion protection in saltwater environments, ensuring the durability of submerged engine components.
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$ 12.35
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1-2 weeks delivery time The Osculati 43.260.44 aluminium bridge anode is a direct-fit replacement for Yamaha OEM references 65W-45251-00 and 6EO-4525112, suitable for 4-stroke outboard engines ranging from 4 to 70 HP. Engineered from high-efficiency aluminium alloy, it features an M5 threaded connection and offers superior performance in brackish and saltwater. Lightweight yet corrosion-resistant, this anode ensures reliable galvanic protection for submerged engine parts in marine conditions.
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$ 9.92
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1-2 weeks delivery time Specifically designed for freshwater environments, the Osculati 43.260.45 magnesium bridge anode offers optimal galvanic protection for Yamaha 4-stroke outboards ranging from 4 to 70 HP. Compatible with OEM part numbers 65W-45251-00 and 6EO-4525112, this M5-threaded anode ensures rapid electrochemical activity, preventing corrosion of underwater engine components in non-saline conditions. Lightweight and highly reactive, it is the best choice for long-term freshwater use.
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$ 17.89
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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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$ 35.10
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1-2 weeks delivery time Osculati 43.260.09 – Yamaha 62Y-11325-00 is an internal zinc cylinder anode used in Yamaha outboard motors ranging from 40 to 200 HP. Replacing OEM part 62Y-11325-00, it protects internal cooling circuits from corrosion by acting as a sacrificial metal in saltwater conditions. Installed inside the water passages, it helps prevent pitting of aluminum parts such as the engine block and cylinder head.
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$ 18.79
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1-2 weeks delivery time Osculati 43.260.13 – Yamaha 6E5-11325-00 is a zinc internal cylinder anode for Yamaha outboards from 9.9 to 250 HP. It replaces OEM part 6E5-11325-00 and is installed within the engine’s cooling system to protect against internal corrosion caused by electrolysis. Precision-machined for easy fitment, it offers long-lasting protection for aluminum engine block components operating in saltwater environments.
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$ 10.60
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1-2 weeks delivery time Osculati 43.260.15 – Yamaha 66M-11325-00 is a zinc cylinder anode designed for Yamaha outboards from 9.9 to 300 HP. Installed inside the engine’s cooling water jacket, it replaces OEM part 66M-11325-00 and provides reliable sacrificial protection for internal aluminum components exposed to saltwater. The anode ensures long-term resistance to galvanic corrosion with exact OEM fit and marine-grade zinc composition.
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$ 15.95
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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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$ 39.36
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1-2 weeks delivery time Osculati 43.260.20 – Yamaha 68V-11325-01 is an aluminium internal cylinder anode designed for Yamaha outboard engines from 80 to 225 HP. As a direct replacement for OEM part 68V-11325-01, this anode offers long-lasting corrosion protection in brackish and saltwater environments. Aluminium composition ensures reduced weight, high efficiency, and environmental compliance while protecting internal engine surfaces from galvanic damage.
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$ 30.78
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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.