90501-MB7-610 Washer (10.3X25) - Overview. The 90501-MB7-610 Washer (10.3X25) is a crucial component within Honda marine engine systems, serving as a precise spacer or protective washer to maintain the alignment and integrity of various assemblies. Its role is essential to ensure reliable operation and longevity by preventing wear and providing stable mounting surfaces. Designed to meet exact factory dimensions, this washer guarantees seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precision 10.3X25mm flat washer designed for Honda marine applications.. OEM genuine component ensuring exact fit and reliable performance.. Provides critical spacing and protection between mechanical components.. Matches factory specifications for dimensions and tolerances.. Manufactured to integrate cleanly with related hardware and seals.. Supports sustained durability and performance under marine conditions.. Why Choose Genuine OEM. Using original