90408-ZV5-003 Washer (2) - Overview. The 90408-ZV5-003 Washer (2) is a vital rigging component in Honda marine engine systems, serving as a washer designed to ensure secure fastening and optimal assembly integrity. This genuine OEM Honda part plays a crucial role in the mechanical rigging and attachment system of Honda outboard engines, maintaining reliable, durable connections in marine environments. Made to exact factory specifications, it ensures seamless integration with existing parts, main