Mercury - Decal Set for 3.4L V6 175HP Pro XS Outboards Cowling Restoration Kit Factory-Matched Marine Graphics 8M0214849. Overview. There's a certain feeling that comes from running a Pro XS - a little thrill, a little pride, and a whole lot of trust in the power hanging off the transom. But even the strongest engines show their miles after enough long runs, sun-soaked days and late-night trailering sessions. The decals start to fade, the stripes lose their edge, and the motor begins to look mor