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 The Volvo Penta Navalloy Anodic Bar model 9017682A offers excellent corrosion protection for marine engine parts.
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$ 46.06
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1-2 weeks delivery time The Volvo Penta Navalloy Anodic Bar model 9017681A is a durable anode designed to extend the life of marine equipment through effective protection.
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$ 38.67
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1-2 weeks delivery time The Volvo Penta Navalloy DPX Outdrive Cube is designed to deliver reliable performance and durability for your outdrive system, identified by article number 9017687A.
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$ 25.82
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1-2 weeks delivery time The Volvo Penta Navalloy Gearhouse DPS-A/SX-A fits DPS-A and SX-A models, ensuring smooth transmission and long-lasting use with article number 9017686A.
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$ 41.14
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1-2 weeks delivery time The Volvo Penta Navalloy Gimbal Plate for SX models enhances the connection between engine and outdrive, offering robust support, article number 9017684A.
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$ 49.38
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1-2 weeks delivery time The Volvo Penta Navalloy Prop Ring for Duo Prop systems ensures secure fitting and protection, with article number 9017683A.
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$ 38.60
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1-2 weeks delivery time The Volvo Penta Navalloy Prop Ring for the V18 configuration is built for durability and optimal performance, article number 9017688A.
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$ 33.48
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1-2 weeks delivery time The Volvo Penta Navalloy Transom DPS-A/SX-A provides a strong mounting solution for marine setups on DPS-A and SX-A models, article number 9017685A.
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$ 39.35
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1-2 weeks delivery time The Volvo Penta Navalloy Transom Plate for SX models offers a sturdy foundation to secure marine engine systems, article number 9017689A.
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$ 60.46
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1-2 weeks delivery time The large bar zinc anode is designed for Honda outboard engines with 75–115HP, offering OEM-compatible protection under reference 06411-ZW1-000.
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$ 64.85
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1-2 weeks delivery time This small bar zinc anode fits smaller Honda outboard engines ranging from 35 to 50HP and provides OEM-level corrosion protection with reference 06411-ZV5-000.
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$ 22.75
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1-2 weeks delivery time The Zinc Anode Kit for Alpha 1 Gen II sterndrives made from 1991 onwards ensures reliable corrosion protection with durable marine-grade zinc material.
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$ 98.68
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1-2 weeks delivery time Tailored for Alpha 1 Gen I models from 1983 to 1990, this zinc anode kit provides dependable galvanic corrosion protection for marine propulsion systems.
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$ 84.99
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1-2 weeks delivery time Designed for Bravo 3 outdrives from 2004 to the present, this zinc anode kit offers durable corrosion resistance suited for harsh marine environments.
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$ 118.96
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1-2 weeks delivery time This zinc anode kit protects Bravo 1 units from 1988 onwards, offering robust electrochemical damage prevention trusted by marine professionals.
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$ 97.44
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1-2 weeks delivery time The Zinc Anode Kit for Bravo 2 and Bravo 3 drives covers models from 1989 to 2003, extending component life in corrosive water conditions.
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$ 123.87
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1-2 weeks delivery time Specifically built for Volvo 280 drives, this zinc anode kit delivers consistent anti-corrosion performance in demanding marine settings.
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$ 82.89
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1-2 weeks delivery time The zinc anode kit for Volvo 280 Dual Prop drives protects underwater components from galvanic corrosion with complete set compatibility.
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$ 87.36
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1-2 weeks delivery time Designed for Volvo 290 drives, this zinc anode kit ensures durable and long-lasting corrosion protection in marine environments.
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$ 84.01
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1-2 weeks delivery time Specially made for Volvo 290 Dual Prop systems, this zinc anode kit provides strong defense against electrolysis and metal wear in saltwater.
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$ 88.40
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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.