Seachoice Anode Kits

Seachoice Anode Kits: Complete Corrosion Defense for Your Marine Engine

Galvanic corrosion is one of the most relentless threats a marine engine faces, and stopping it starts with the right sacrificial anode system. Seachoice has been a trusted name in marine hardware since 1988, and their lineup of anode kits reflects the same commitment to quality, fit, and value that boaters have come to expect from the brand. With more than a dozen kits engineered for today's most popular sterndrive and outboard platforms, Seachoice makes routine corrosion maintenance straightforward and accessible.

Material Options Matched to Your Water Type

One of the most practical aspects of Seachoice's anode kit lineup is the choice of sacrificial metal. Two distinct formulations are offered to match the water environment where the boat operates:

• Aluminum Anode Kits – Designed for salt and brackish water, conforming to Mil-Spec A-24779(SH). Aluminum anodes provide excellent electrochemical potential in saline environments while remaining cadmium-free.
• Magnesium Anode Kits – Formulated exclusively for freshwater use, conforming to Mil-Spec A-21412(SH). Magnesium's higher driving voltage makes it the correct choice when operating in rivers, lakes, and other low-conductivity water.

Both variants are cadmium-free and environmentally friendly, an important consideration for boaters in regulated waterways.

Engine and Sterndrive Coverage

Seachoice anode kits are engineered around specific engine families, ensuring components fit precisely without modification. The current lineup covers a broad range of popular platforms, including:

• Mercury Alpha One Gen I & Gen II – Kits include a block anode for the gimbal housing, skeg for the ventilation plate, and appropriate stainless steel hardware.
• Mercury Bravo I, II & III – Multi-piece kits address the ventilation plate, skeg, prop collar, and trim rams depending on the specific Bravo configuration.
• Mercury Verado 4-Cylinder & 6-Cylinder – Purpose-built kits with gimbal housing block anodes, lower-unit side plates, and skeg protection tailored to Verado's design.
• Volvo Penta 290 HP, SX, SXA/DPSA, DPH/DPR – Several Volvo-specific kits are available in both aluminum and magnesium, providing thorough coverage of Volvo's sterndrive lineup.

Everything Needed in One Box

Each Seachoice anode kit is designed as a complete maintenance solution. Kits arrive with all necessary sacrificial anode pieces and the correct stainless steel fasteners — either 18-8/304 or 316 stainless steel depending on the application — so there is no hunting for hardware before installation. This all-in-one approach simplifies both scheduled maintenance and mid-season replacements.

Built to a Standard Boaters Can Trust

Seachoice's anode kits are manufactured to rigorous standards, with both aluminum and magnesium materials conforming to applicable U.S. Military specifications. The brand backs its entire product line with a no-hassle warranty, and products are stocked across 18 distribution points in the U.S., Canada, and internationally — meaning replacement kits are rarely hard to find when it's time to haul out and refresh your anodes for the season.

Whether you're protecting a performance sterndrive running in the Gulf Coast shallows or a freshwater lake cruiser on the Great Lakes, browse the full selection of Seachoice Anode Kits to find the exact kit for your engine and water type.