Mercury – Quicksilver Solenoid | Outboard Electrical System | Marine-Grade Construction | 8M0185145Mercury Quicksilver Solenoid Outboard Electrical System Marine Grade Construction 8M0185145 Overview Theres something reassuring about an engine that answers the moment you turn the key. No hesitation, just that familiar spark that tells you the days getting off to the right start. This Mercury Marine part helps create that feeling. When youre easing away from the dock at sunrise or pushing hard through open chop, you want a solenoid you can trust