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 43.424.12 is a zinc anode for Mercury Verado outboards, replacing OEM references 892227 and 893404. Designed for use in saltwater environments, it provides critical galvanic protection for lower unit components and mounting hardware, ensuring long-term durability of the engine structure.
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$ 38.70
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1-2 weeks delivery time The Osculati 43.424.13 is a marine-grade aluminium anode for Mercury Verado outboards, replacing OEM part 880653. Engineered for saltwater and brackish environments, it provides excellent protection against galvanic corrosion while reducing weight and environmental impact compared to zinc alternatives.
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$ 48.98
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1-2 weeks delivery time The Osculati 43.424.14 is a magnesium anode for Mercury Verado outboards, replacing OEM part 880653. Designed exclusively for freshwater environments, it delivers superior galvanic protection for the lower unit, trim, and submerged parts of the outboard, where zinc and aluminium are less effective.
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$ 70.28
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1-2 weeks delivery time Specifically engineered for Mercury Verado outboards, the Osculati 43.424.16 magnesium anode (OEM ref. 892227 / 893404) provides superior cathodic protection in freshwater environments. Manufactured from high-purity magnesium alloy, this anode ensures maximum electrochemical activity, ideal for preventing galvanic corrosion on engine components. Dimensions and fitment comply precisely with OEM specifications for seamless replacement and performance reliability.
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$ 35.22
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1-2 weeks delivery time The Osculati 43.434.50 zinc anode is a direct-fit replacement for Mercury V6 and V8 outboards using OEM part 8M0137814. Engineered for aggressive saltwater environments, this anode is essential for protecting large outboard powerheads and lower units from galvanic corrosion. Its durable marine-grade zinc construction ensures consistent performance and longevity under demanding marine conditions.
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$ 69.69
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1-2 weeks delivery time The Osculati 43.436.50 aluminium anode is designed for Mercury V6 and V8 outboards and replaces OEM part 8M0137814. Built from a lightweight, cadmium-free aluminium alloy, this anode provides durable galvanic protection in saltwater and brackish environments. Its broad coverage and direct-fit design ensure reliable defense for critical engine components like the lower unit, mounting surfaces, and water passages.
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$ 45.95
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1-2 weeks delivery time The Osculati 43.438.50 magnesium anode is a highly reactive corrosion protection component for Mercury V6 and V8 outboards, compatible with OEM part 8M0137814. Specifically designed for freshwater use, this plate-style anode delivers maximum cathodic protection for lower units, gearcases, and mounting points by sacrificing itself in low-conductivity environments. It offers a precise OEM-equivalent fit and high-purity magnesium composition.
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$ 57.56
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1-2 weeks delivery time The Osculati 43.424.50 zinc anode is a direct replacement for Mercury 350 PRO outboards using OEM part 8M0001734. Designed to fit securely into the designated anode slot on the lower unit or transom area, this anode delivers dependable corrosion protection in saltwater environments. Manufactured from high-grade zinc, it ensures long-lasting performance and full compliance with original engine specifications.
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$ 54.52
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1-2 weeks delivery time The Osculati 43.424.51 aluminium anode is a direct replacement for Mercury 350 PRO outboards (OEM ref. 8M0001734), optimized for use in brackish and saltwater conditions. Made from marine-grade aluminium alloy, this anode delivers superior longevity and corrosion protection with reduced environmental impact compared to traditional zinc. Its lightweight design and OEM-compliant shape ensure precise fit and secure installation on lower units or transom surfaces.
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$ 37.88
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1-2 weeks delivery time The Osculati 43.424.52 magnesium anode is engineered for Mercury 350 PRO outboards with OEM reference 8M0001734, delivering maximum cathodic protection in freshwater environments. Manufactured from high-purity magnesium alloy, this anode reacts more actively than zinc or aluminium, making it ideal for low-conductivity waters. Its precision fit and OEM-equivalent design ensure easy installation on the lower unit or transom area.
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$ 57.71
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1-2 weeks delivery time OEM-style zinc ogive anode for MerCruiser Bravo III sterndrive systems, equivalent to reference 865182. This streamlined anode mounts directly on the propeller cone (nose) to protect drive components from galvanic corrosion. Designed for saltwater environments, the high-purity zinc construction ensures long-lasting protection while maintaining hydrodynamic efficiency.
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$ 43.01
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1-2 weeks delivery time Aluminium ogive anode compatible with MerCruiser Bravo III sterndrive systems, equivalent to OEM part 865182. Designed for installation on the propeller cone, this anode protects lower unit components from galvanic corrosion. The aluminium alloy offers extended life and broad-spectrum protection in both saltwater and brackish environments while maintaining hydrodynamic efficiency.
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$ 26.37
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1-2 weeks delivery time High-activity magnesium ogive anode for MerCruiser Bravo III sterndrives, equivalent to OEM part 865182. Designed for installation on the propeller nose cone, this anode provides optimal galvanic protection in freshwater environments. Magnesium's electrochemical reactivity ensures reliable shielding of the lower unit in low-conductivity conditions, ideal for inland and lake use.
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$ 35.22
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1-2 weeks delivery time Osculati 43.260.07 – Yamaha 67F-11325-00 is a cylinder-type internal anode designed for Yamaha 80 and 100 HP outboard motors. Replacing Yamaha OEM part 67F-11325-00, this zinc anode is mounted inside the cooling system passages, where it protects aluminum engine components from galvanic corrosion caused by saltwater exposure. The precision-machined design ensures a secure fit and long-lasting performance.
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$ 18.23
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1-2 weeks delivery time Osculati 43.260.12 – Yamaha 6G8-11325-00 is a compact zinc cylinder anode with dimensions 13 × 13.6 × 12.7 mm, engineered for Yamaha outboard engines from 2.5 to 70 HP. This anode replaces OEM part 6G8-11325-00 and is installed in the engine’s internal cooling circuit to prevent galvanic corrosion. Ideal for saltwater operation, it protects critical aluminum components such as cylinder walls and water jackets.
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$ 13.22
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1-2 weeks delivery time Osculati 43.260.14 – Yamaha 6J8-11325-00 is a zinc cylinder anode designed for Yamaha outboard motors from 20 to 30 HP. This internal anode, replacing OEM reference 6J8-11325-00, is used in the cooling system water jacket to protect engine components from galvanic corrosion. Compact and precisely machined, it ensures long-lasting sacrificial protection in saltwater environments, helping to maintain engine reliability and prevent internal damage.
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$ 29.07
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1-2 weeks delivery time The Osculati 43.640.02 mega fin anode is a zinc OEM-style replacement for Tohatsu 3C8-60217-1, designed for 25–30 HP and 40–50 HP outboard motors. With a wide Ø59.5 mm diameter, it offers enhanced corrosion protection and trim tab function, ideal for saltwater operation on mid-range Tohatsu engines.
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$ 36.78
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1-2 weeks delivery time The Osculati 43.640.05 is a compact zinc anode that replaces Tohatsu 3B7-60218-1. Specifically designed for 9.9, 15, and 18 HP outboards, this 27×13×20 mm block-style anode provides localized corrosion protection for critical aluminum engine parts submerged in saltwater environments.
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$ 18.25
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1-2 weeks delivery time The Osculati 43.434.30 zinc plate anode is a direct replacement for Mercury 150 HP 4-stroke outboards using OEM reference 8M0057772. Designed for installation on the lower unit, this wide-surface zinc anode protects submerged engine components against galvanic corrosion in saltwater environments. Its flat plate profile ensures uniform wear and full OEM compatibility.
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$ 44.75
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1-2 weeks delivery time The Osculati 43.434.31 aluminium plate anode is a lightweight, high-efficiency alternative to zinc, designed for Mercury 150 HP 4-stroke outboards (OEM ref. 8M0057772). This plate-style anode provides wide-surface cathodic protection for submerged components and is ideal for use in saltwater and brackish water. Its OEM-equivalent dimensions ensure reliable mounting to the lower unit.
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$ 17.77
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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.