90754-ZV4-000 Pin (5x21) - Overview. The 90754-ZV4-000 Pin (5x21) is a specialized component used in Honda marine engine systems, primarily within the rigging and accessory setups. This component functions as a precise fastener or pin that helps secure various components, supporting the integrity and reliable operation of the marine system. Designed to match factory specifications, the pin ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Feat