90563-ZV5-000 Plain (10mm) Washer - Overview. The 90563-ZV5-000 Plain (10mm) Washer is a crucial hardware component within Honda marine engine systems. This washer supports the mechanical assembly by distributing the load of fasteners over a broader surface area, ensuring that connections remain tight and secure, preventing damage to the engine or mounting surfaces. Its role is vital in maintaining the reliability and durability of your marine equipment.. Key Features. A 10mm diameter plain washer designed specifically for Honda marine applications.. Genuine OEM part ensuring exact factory specifications and consistent quality.. Distributes fastener loads evenly, reducing wear and potential damage.. Manufactured with precision to fit seamlessly with existing Honda marine engine hardware.. Enhances system performance by maintaining secure connections under demanding marine conditions.. Contributes to long-term durability and performance of marine engine systems.. Why Choose Genuine OEM.