90540-ZV5-000 Shim (73X77X0.30) - Overview. The 90540-ZV5-000 Shim (73X77X0.30) is a specialized component used within Honda marine engine systems. This shim acts as a precise spacer to help maintain correct alignment and tolerance between critical parts, ensuring the marine engine operates smoothly and reliably. It supports the rear bevel system of the propeller assembly, contributing to consistent gear engagement and minimizing wear and vibration. Designed to exact factory specifications, this