TSP-1-DPTransom Support Plate Upper Mount Transom 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 bolts High quality cast aluminum All plates - 3/8 thick Simple to install