Mercury - Quicksilver Alternator Marine & Equipment Charging Series Corrosion-Resistant Marine Construction 8M6007519. Overview. Whether you're running a compact diesel engine on a sailboat, tending a John Deere tractor at first light, or working a piece of equipment through a long afternoon, reliable charging power isn't optional - it's essential. A good alternator gives you that small but powerful sense of calm, the kind that settles in when the lights don't dim, the gauges stay steady, and th