Mercury - FourStroke Decal for 3.4L V6 & 4.6L V8 Outboards Cowling Badge Graphic Factory-Matched Marine Adhesive 8M0214839. Overview. There's a certain pride that comes with owning a clean, well-kept Mercury FourStroke. Whether it's the quiet push out of the marina at dawn or the smooth surge of power when you throttle up, these engines become part of your time on the water. But years of sun, spray and trailering slowly wear down the sharp lines of the cowling. When the FourStroke badge begins t