Transom Support Plate Upper MountTransom Support Plate distributes stress of engine bolts. Cast in high quality aluminum. All plates are 3/8″ thick. Fit top bolt pattern of outboard. Generic plate with no lettering is standard, but custom logos and black painting can be produced with minimum quantities. Features:Distributes stress of engine boltsHigh quality cast aluminumAll plates – 3/8″ thickSimple to install