Engine, sterndrive, and outboard anodes are designed to protect submerged metal components from galvanic corrosion through sacrificial cathodic protection. They are used on marine engines, sterndrives, outboard lower units, propellers, trim tabs, and related underwater hardware where exposed metals require protection in saltwater, brackish water, or freshwater. Anodes are available individually or as complete kits, with different shapes, mounting configurations, and materials selected to match the specific engine or drive system.
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1-2 weeks delivery time Reliable trim component suitable for F75, F80, and F100 Yamaha engines, providing precise installation and engine protection with OEM numbers 6D8-43880-00, 6D8-43880-01, and 6D8-43880-09.
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$ 195.05
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1-2 weeks delivery time Engine trim designed for larger Yamaha outboards including F200, F225, F250, and Z300, supporting optimal function and durability with OEM numbers 69J-43880-00.01 and 60V-43880-00.
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$ 254.01
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1-2 weeks delivery time High-quality trim compatible with multiple Yamaha engines, ensuring proper fit and sustained performance for models like F75TR, F80 AET, and F100AET with OEM numbers 6D8-43880-00 and 6D8-43880-09.
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$ 195.05
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1-2 weeks delivery time The Martyr CM67F1132501Z zinc block anode is designed for Yamaha engines and provides effective protection against electrochemical corrosion. Manufactured from durable zinc, it is supplied in bulk and identified by reference 67F-11325-01 with barcode 0628309234096.
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$ 67.98
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1-2 weeks delivery time The magnesium anode propeller flange for SD 120 baseplates is designed for Volvo Penta saildrives and headers. It measures 124 mm length, 96 mm width, 27 mm height, weighs 0.13 kg, and offers reliable corrosion protection in bulk packaging.
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$ 177
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1-2 weeks delivery time The Osculati 43.100.00 zinc anode is designed to fit over shaft nuts on Renault Marine propeller shafts (22/25 mm). With 16×2 mm internal thread and compact dimensions, it ensures direct galvanic protection of the shaft nut in saltwater. Ideal for fast and localized cathodic defense of metal components under high stress.
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$ 27.72
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1-2 weeks delivery time The Navalloy Anode Front Gear Case is specifically made for Bombardier systems, providing reliable corrosion protection in harsh marine environments. It ensures long-lasting performance by preventing electrolysis-related wear.
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$ 33.16
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1-2 weeks delivery time The Navalloy Anode Prop Shaft is designed to protect the prop shaft of Bombardier boats from corrosion. This durable anode offers excellent protection against electrolysis, ensuring the longevity of your vessel’s key components.
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$ 27.59
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1-2 weeks delivery time The Navalloy Anode Side Mounted is specially crafted for Bombardier vessels, offering corrosion resistance for side-mounted areas. It helps prevent electrolysis damage, contributing to the protection and integrity of the boat.
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$ 19.11
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1-2 weeks delivery time The Navalloy Anode Side Pocket Anode is designed for easy installation on Bombardier boats, providing efficient corrosion resistance for side pockets and maintaining the vessel's structural integrity.
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$ 19.70
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1-2 weeks delivery time The Navalloy Anode Transom is engineered to protect the transom area of Bombardier boats. It effectively prevents corrosion, ensuring the longevity and durability of the boat's critical components.
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$ 30.08
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1-2 weeks delivery time The Navalloy Anode Transom Mount is designed for Bombardier boats, providing effective corrosion protection for the transom mount. Its precise fit ensures optimal performance and protection against electrolysis.
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$ 48.44
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1-2 weeks delivery time The Navalloy Bombardier OMC Cobra Aluminum Anode Kit offers superior protection against corrosion for marine equipment. Made from a specialized aluminum alloy, it performs well in harsh marine conditions.
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$ 107.73
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1-2 weeks delivery time This Honda-specific trim tab anode is designed to help maintain the performance and longevity of your outboard motor by preventing corrosion and damage.
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$ 27.59
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1-2 weeks delivery time Engineered for Honda outboard motors, this trim tab anode is crucial for reducing wear and tear, offering superior protection against corrosion for better performance.
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$ 23.96
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1-2 weeks delivery time This Mercury aluminum anode is designed to protect the bearing carrier, ensuring optimal performance and safeguarding your outboard motor from damage and corrosion.
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$ 32.27
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1-2 weeks delivery time This durable aluminum anode is made specifically for Mercury Alpha cavitation plates, providing reliable protection against corrosion and wear, ensuring longer service life and better performance.
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$ 34.02
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1-2 weeks delivery time Designed for the Alpha Trim Cylinder, this Navalloy Mercury aluminum anode prevents corrosion and enhances durability, ensuring smoother operation and longevity of the trim cylinder.
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$ 11.32
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1-2 weeks delivery time This aluminum anode is designed to protect the Bravo Bearing Carrier from corrosion and wear, ensuring your boat’s components remain in top condition and perform optimally.
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$ 26.22
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1-2 weeks delivery time This high-quality aluminum anode is designed to protect the Bravo Cavitation Plate from corrosion, extending the life of your boat's equipment and ensuring reliable performance.
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$ 33.41
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What do engine, sterndrive, and outboard anodes protect?
Engine, sterndrive, and outboard anodes provide sacrificial cathodic protection for submerged or water-exposed metal components. Depending on the installation, anodes may protect lower units, gear housings, trim tabs, transom brackets, propeller areas, cooling passages, and other metal parts that are exposed to galvanic corrosion.
The anode is designed to corrode preferentially, helping protect more valuable engine and drive components from deterioration.
Why is regular replacement of engine and drive anodes important?
Sacrificial anodes are gradually consumed while protecting the surrounding metal components, so they must be inspected and replaced before too much material is lost. A heavily worn or missing anode can no longer provide effective protection, increasing the risk of corrosion on the engine, sterndrive, or outboard assembly.
Inspection frequency depends on operating conditions, water type, vessel usage, and the electrical environment around the boat.
How can I choose the correct anode for an engine, sterndrive, or outboard motor?
The correct anode should match the engine or drive manufacturer, model, installation position, dimensions, mounting arrangement, and required anode material. OEM part numbers or cross-reference numbers are often the most reliable way to identify the correct replacement.
Because similar engines and sterndrives may use different anodes depending on model year or configuration, compatibility should always be checked before installation.