Mercury - Quicksilver Outboard Service Kit EFI Maintenance Essentials OEM Components 8M0172124. Overview. If you run a 25 or 30 horsepower Mercury EFI outboard, you already know how much life those small engines pack into every push of the throttle. They're the workhorses of skiffs, runabouts, and lightweight fishing rigs-quiet, steady and always game for another day on the water. The Quicksilver 8M0172124 Outboard Service Kit brings that same confidence to your routine maintenance. With all the