Mercury - Quicksilver Alternator Charging System Corrosion-Resistant Marine Finish 8M6007468. Overview. When you're miles from the dock and the sun's starting to dip, the last thing you want to think about is whether your electrical system will keep up. This Quicksilver alternator is one of those parts you don't notice when it's doing its job - and that's exactly the point. It's steady, dependable, and built for boaters who expect their gear to work every single time they turn the key. Whether y