91206-921-000 Oil Seal (16X28X6) - Overview. The 91206-921-000 Oil Seal (16X28X6) is a critical sealing component for Honda marine engine systems. This oil seal supports the engine system by preventing oil leaks and contamination, ensuring that your equipment operates reliably and efficiently. Precisely manufactured to Honda's factory specifications and tolerances, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. High-quality oil