90758-ZV4-000 Split (3Mm) Pin - Overview. The 90758-ZV4-000 Split (3Mm) Pin is a critical marine hardware component designed specifically for Honda marine engine systems. This small yet essential pin supports the propeller shaft assembly and gear case system by firmly securing components, preventing unwanted movement or loosening during operation. Its exact 3mm diameter ensures precision fit and reliable mechanical locking within Honda outboard engines from models BF2 through BF250 series, inclu