Mercury - Alternator Volvo Penta GM Series 12-Volt/65 Amp 8M6007510. Overview. When you spend long days on the water, you quickly learn which parts you can count on-and which ones you can't. A dependable alternator isn't just about keeping batteries charged; it's about keeping navigation lights glowing at dusk, depth finders steady, radios clear, and every essential system ready when you need it. The Quicksilver 8M6007510 Alternator brings that level of trust back to your Volvo Penta-powered boa