Mercury - Quicksilver Engine Starter 12-Volt Marine Starter 8M6007339. Overview. There's a kind of quiet confidence that comes from turning the key and hearing your engine fire instantly, especially when you're miles from shore with only open water behind you. This Quicksilver starter has that dependable, steady feel seasoned boaters appreciate - the kind that lets you focus on the day, not the question of whether your engine will wake up. It's built for real-world conditions: early-morning chil