OMC / MERCURY POWERHEAD MOUNTING BOLTS KIT, STAINLESS STEEL, FITS V-4 & V-6 CROSSFLOW 1979 & UP; 6 5-1/4" BOLTS (5/16" X 18); 2 1" BOLTS (5-16" X 18); 4 5/16" NUTS (5/16" X 24 LOCK NUT); 9 5-16" LOCK WASHER