Mercury - Vented Splash Cover Verado Series Black Polysoft II Fabric 8M0228528. A 600 horsepower Verado isn't the kind of engine you "try out." It's the kind you build a boat around. When you're running that much power, you're usually thinking about the run ahead, the weather window, and how the boat feels under you-not about what spray and sun are doing to your cowling. Still, those elements add up fast, especially when your days on the water are long and your pace is steady.. This Mercury vent