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 Crafted for Volvo Penta Saildrive systems, this magnesium anode ensures reliable corrosion resistance in marine environments.
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$ 102.72
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1-2 weeks delivery time Designed for Volvo Penta SX-Drive models, this magnesium anode serves as a transom plate, protecting the sterndrive from corrosion damage.
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$ 40.07
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1-2 weeks delivery time This magnesium anode is made for SXA and DPS Volvo Penta sterndrive models, acting as a transom shield to prevent corrosion and wear.
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$ 51.50
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1-2 weeks delivery time Suitable for various Volvo Penta sterndrive models including 290, 290SP, SX, and DP-X, this triangular magnesium anode helps prevent corrosion of marine engine parts.
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$ 29.82
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1-2 weeks delivery time This magnesium anode is engineered for the upper gear case of Volvo Penta sterndrives, specifically SXA and DPS models, offering essential protection against galvanic corrosion. It corresponds to OEM reference 3883728 and is made from high-quality magnesium.
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$ 53.64
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Bar (OEM 6H1-45251-02), is a magnesium bar anode developed to match Yamaha outboards, providing dependable anti-corrosion protection.
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$ 43.33
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Button (OEM 688-45251-01), features a button-shaped design made for Yamaha outboard engines and ensures reliable corrosion protection.
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$ 20.07
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Cutdown Skeg (OEM 664-45371-01), is crafted for Yamaha outboards with a cutdown skeg configuration, offering effective corrosion defense in marine environments.
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$ 26.07
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Handle Bar (OEM 6G5-45251-01), is designed for Yamaha outboards with a handle bar setup and delivers solid protection against corrosion.
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$ 77.42
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Skeg (OEM 688-45371-02), is tailored for Yamaha outboards and provides long-lasting resistance to corrosion on the skeg component.
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$ 34.85
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Skeg (OEM 6E5-45371-01), is a durable solution for protecting Yamaha outboard skegs from corrosion and extending engine longevity.
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$ 37.07
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Skeg (OEM 6K1-45371-00), is engineered for Yamaha outboards to protect the skeg from saltwater corrosion and maintain engine durability.
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$ 50.55
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Skeg (OEM 6K14537102), offers corrosion resistance for Yamaha outboards and fits securely to the skeg for efficient marine protection.
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$ 55.72
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Small Block (OEM 6E5-45251-00), is built for Yamaha outboards with a small block layout, providing critical corrosion protection.
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$ 30.06
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1-2 weeks delivery time The Allpa Magnesium Anode Yamaha Outboard, Trib Tab (OEM 69L4537100), is specifically created for Yamaha outboards with Trib Tabs, offering essential protection against marine corrosion.
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$ 40.84
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1-2 weeks delivery time The Allpa Magnesium Anode Small Block is designed for Yamaha and Honda outboards, providing corrosion protection to ensure reliable marine engine performance.
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$ 26.28
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1-2 weeks delivery time The Allpa Propeller Nut Anode 3/4" NC10 Complete is a zinc anode set for Mercury MerCruiser Alpha-1 and Bravo-1 propeller nut assemblies, providing corrosion protection in saltwater.
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$ 112.86
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1-2 weeks delivery time The Allpa Propeller Nut Anode 3/4" NC10 Magnesium Complete is a magnesium anode set ideal for freshwater use, protecting Mercury MerCruiser Alpha-1 and Bravo-1 propeller nut assemblies.
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$ 113.18
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1-2 weeks delivery time The Volvo 280 Navalloy export kit with article number 9017679A is designed specifically for the Volvo 280 model.
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$ 93.81
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1-2 weeks delivery time This export kit for the Volvo 280 model, identified by article number 9017678A, provides essential components for export configurations.
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$ 93.06
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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.