91252-ZW9-003 Water (17Mm) Seal - Overview. The 91252-ZW9-003 Water (17Mm) Seal is a critical component designed for Honda marine engine systems. This 17mm water seal serves a vital role in preventing water from entering internal engine components, supporting the engine's cooling and propulsion systems. By providing a precise, tight seal, it helps maintain the integrity and reliability of the marine engine, ensuring optimal performance during your boating activities. Engineered to meet strict OE