Mercury - Vented Splash Cover for 3.4L V6 175hp Pro XS Engines Engine Protection Cover Black Polysoft II Material 8M0228532. Overview. When you spend enough weekends on the water, you learn which pieces of gear you can trust without thinking about them. This vented splash cover is one of those quiet companions - the kind that protects your Mercury V6 and lets you focus on the run, the tide, or the fishing grounds instead of worrying about your engine's finish. There's a real comfort in glancing