Mercury - Water Pump Repair Kit Cooling System Service Composite & Marine-Grade Metals 8M0155395. Overview. Anyone who's spent enough time on the water knows how quietly critical the water pump is. You rarely think about it-until the day something goes wrong. That's why having a dependable repair kit is more than routine maintenance; it's peace of mind. The Quicksilver 8M0155395 Water Pump Repair Kit gives you that confidence. Whether you're cruising a calm river at sunrise or pushing through af