91252-ZW1-003 Water (Inner) Seal - Overview. The 91252-ZW1-003 Water (Inner) Seal is a vital component in Honda marine engine systems. Its primary function is to prevent the ingress of water into sensitive areas of the engine, maintaining lubrication and preventing corrosion, which helps ensure smooth and reliable engine operation. Designed to meet strict factory specifications, this OEM seal provides seamless integration with existing parts, maintaining optimal performance and durability.. Key