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 Made specifically for the DP-X drive, this aluminum bar anode offers tailored corrosion resistance for Volvo Penta sterndrive systems.
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$ 40.98
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1-2 weeks delivery time This aluminum anode is designed for Volvo Penta sterndrives, particularly for the Dockbone AQ250, AQ270, and AQ280 models, ensuring strong corrosion protection.
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$ 34.34
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1-2 weeks delivery time Designed for Volvo Penta sterndrives with Duo-Prop systems, this aluminum ring anode offers vital anti-corrosion protection for optimal performance.
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$ 35.41
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1-2 weeks delivery time This aluminum anode is tailored for the gimbal plate of Volvo Penta SX-Drive sterndrives, offering effective corrosion resistance for long-lasting durability.
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$ 59.04
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1-2 weeks delivery time Crafted for Volvo Penta sterndrives SXA and DP-X models, this aluminum transom shield anode provides robust protection against corrosion at the transom.
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$ 21.98
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1-2 weeks delivery time This large aluminum ring anode is designed for Volvo Penta sterndrives AQ-280 and AQ-290 models, ensuring effective corrosion prevention in marine environments.
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$ 31.18
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1-2 weeks delivery time Intended for Volvo Penta sterndrive saildrive units, this aluminum anode delivers essential protection against corrosion for marine applications.
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$ 113.29
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1-2 weeks delivery time Designed for the transom plate of Volvo Penta SX-Drive sterndrives, this aluminum anode provides strong corrosion protection for long-term durability.
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$ 63.83
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1-2 weeks delivery time This aluminum transom shield anode is specifically made for Volvo Penta SXA and DPS sterndrive units, offering corrosion protection for marine components.
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$ 35.78
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1-2 weeks delivery time This triangular aluminum anode is compatible with multiple Volvo Penta Sterndrive models, offering reliable corrosion resistance for 290, 290SP, SX, and DP-X units.
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$ 11.19
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1-2 weeks delivery time Designed for the upper gear case of Volvo Penta SXA and DPS Sterndrive units, this aluminum anode ensures vital corrosion protection for marine gear components.
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$ 39.63
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1-2 weeks delivery time This aluminum anode bar is designed specifically for Yamaha outboards, ensuring lasting protection against corrosion in marine environments.
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$ 24.75
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1-2 weeks delivery time Engineered for Yamaha outboards, this button-shaped aluminum anode provides reliable corrosion resistance for extended engine life.
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$ 16.46
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1-2 weeks delivery time Tailored for Yamaha outboards, this handle bar type aluminum anode offers dependable defense against saltwater corrosion.
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$ 33.67
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1-2 weeks delivery time Crafted to fit Yamaha outboards, this skeg-type aluminum anode delivers efficient electrochemical protection in harsh marine conditions.
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$ 46.33
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1-2 weeks delivery time Designed for Yamaha outboards, this skeg aluminum anode ensures robust corrosion prevention, ideal for long-term marine use.
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$ 32.60
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1-2 weeks delivery time Created for Yamaha outboards, this aluminum skeg anode protects against galvanic corrosion during prolonged marine exposure.
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$ 32.60
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1-2 weeks delivery time This skeg-style aluminum anode is designed for Yamaha outboards and provides reliable corrosion resistance in marine environments. It features the article number 9017110A and reference 6K14537102.
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$ 47.10
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1-2 weeks delivery time The small block aluminum anode is specifically made for Yamaha outboards, ensuring durable electrochemical protection in saltwater conditions. It has the article number 9017104A and reference 6E54525100.
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$ 21.57
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1-2 weeks delivery time This trib tab aluminum anode for Yamaha outboards helps maintain optimal performance by reducing corrosion over time. Its article number is 9017111A with reference 69L4537100.
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$ 42.80
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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.