90563-ZV4-000 Washer Plain (6mm) - Overview. The 90563-ZV4-000 Washer Plain (6mm) is an essential small hardware component designed for Honda marine engine systems. This plain washer serves a critical role in the assembly and maintenance of marine engines by evenly distributing load and preventing damage to surfaces when fastened. Specifically tailored for use with Honda marine equipment, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Plain washer with a 6mm diameter designed for marine engine applications.. OEM genuine Honda part ensuring exact match with factory original components.. Distributes load evenly, preventing damage to surfaces during fastening.. Manufactured to meet strict Honda specifications, dimensions, and tolerances.. Integrates cleanly with bolts, nuts, and other mounting hardware.. Maintains expected durability and performance levels for marine environments.. Why Choose Genuine OEM. Using original