REPLACEMENT SKEG MERCURY V6 SKEG REPLACEMENT PLATE REPLACEMENT SKEG TO REPLACE THAT LOWER SKEG YOU HIT WITH A STUMP! Well, we hope it wasn't the boat ramp or something silly, Here in Florida, we lose skegs to big ole Gators. Then Bubba comes out and eats the gator! These skeg replacement plates are made of solid cast aluminum and easily cut to shape. Mercury Measurements A equals 3 1/2 inches B equals 6 1/2 inches C equals 9 1/4 inches D equals 7 inches