90405-ZV5-010 Plain (8mm) Washer - Overview. The 90405-ZV5-010 Plain (8mm) Washer is a crucial component designed for Honda marine engine systems. This simple yet essential hardware piece functions within the fastening system to distribute load and prevent damage between mating parts, ensuring durability and operational reliability of marine equipment. It helps maintain efficient mechanical fastening by providing a smooth bearing surface.. Key Features. This 8mm diameter plain washer is designed to OEM specifications for Honda marine engines.. It is an original equipment manufacturer (OEM) part, guaranteeing exact material and dimensional standards.. Distributes fastening load to prevent wear and damage to parts it connects.. Ensures proper fit with mating components, supporting mechanical integrity.. Manufactured to match factory tolerances for seamless integration.. Enhances system durability and reliability in harsh marine environments.. Why Choose Genuine OEM. Using original Honda