Anodes & Zincs

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Anodes and Zincs Resources and Information Also known as zincs, trim tab anodes are essential for steering your boat safely and accurately. Periodically replacing your trim tab helps prevent corrosion and ensure your outboard operates at peak performance. PartsVu is proud to stock a wide selection of anodes from leading boating supply manufacturers. Browse our complete selection to find the anode to match your engine's exact specifications. Looking for more marine products? Browse the full selection of PartsVu’s aftermarket parts and products and accessories . Anodes and Zincs FAQs What do trim tab anodes do? Trim tabs are essential for steering your boat safely and accurately. When properly aligned, trim tab anodes counteract torque pressure generated by the propeller for steering and helps even out “prop-walk,” a propeller’s tendency to rotate about a vertical axis. That’s why it’s called a “trim” tab, enabling a more stable ride that offsets unwanted torque. Trim tabs are often set at an offset angle for this purpose – aligned right for right-turning outboard motors and left for left-turning outboard engines. Most Yamaha outboards have a series of hash marks by the trim tab that indicate the offset needed for accurate steering. There are three types of corrosion boaters typically experience : Simple electrochemical corrosion Galvanic corrosion Electrolytic/stray current corrosion Trim tab anodes absorb these types of corrosion more readily than other engine components, so they serve as a protective barrier to save more expensive and harder-to-repair parts. Over time, these anodes—typically made of cheap zinc materials—will degrade and need to be replaced. As the material degrades, it begins to lose some of its steering abilities and its ability to attract corrosion. While simply cleaning it with a wire brush will restore it for minor damage, replacement is necessary when corroded to approximately half of its original size. This is why they are referred to as sacr

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