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Inboard & Sterndrive Drive Unit 
MerCruiser or OMC & SX
 
Mixing aluminum and zinc anodes will cause harm to engines and outdrives. Remember do not use aluminum and zinc anodes on your outdrive. But Aluminum and zinc have two different properties. by mixing the two, the more active alloy will corrode much quicker, and therefore leave it unprotected.
All of our bellows are molded from a time-tested compound for reliability and longevity. Out U-joint Bellows come complete with marine grade stainless steel clamps and grounding clips. We make sure the clips are properly perforated to scratch through the paint upon installation to create the proper ground.
Facts about Aluminum Anodes: Aluminum alloy anodes are simply more efficient than zinc. Produces to US military specification MilA-24779(SH), aluminum anodes achieve a high capacity (anode life) while maintaining the same output (level of protection. In other words, the aluminum anode will protect the same way but for a longer period of time. Aluminum has a higher operating potential which allows it to be used in areas with mixed water, whereas zinc is only effective in saltwater, and magnesium in freshwater.