Mercury - 500hp 3D Rear Decal V12 SeaPro Series Marine Adhesive Graphic 8M0178228. Overview. There's something unmistakable about a Mercury SeaPro engine working through a long tide change or pushing a heavy boat onto plane without hesitation. That steady, confident power is why so many captains trust the V12 SeaPro, and it's also why keeping your engine looking sharp matters. The Mercury 8M0178228 500hp 3D Rear Decal restores that clean, authoritative look - the look that tells everyone at the