Mercury - Decal Set Cowling Graphics Kit Marine Adhesive Finish 8M0170759. Overview. There's something reassuring about glancing back at your outboard and seeing clean, sharp decals catching the light-especially on a Mercury 25 or 30hp EFI. These little engines are workhorses, always ready to push a skiff up a shallow creek or power a jon boat across a quiet lake at sunrise. Over time, though, sun and spray can dull even the toughest graphics. That's where the Mercury 8M0170759 Decal Set steps i