Heavy gauge engine mounting plate for the "Big Block" Fits Honda GX390, Predator 420, and 13-16HP Clones. Plate measures 14" long by 8" wide and is 3/16" thick. Four 0.38" wide, 1-3/4" long slotted holes for engine adjustment. On center, the slots are 3.707" wide, and on center, the slots are 7.719" apart