11300-ZW6-000 Oil Case Assembly - Overview. The 11300-ZW6-000 Oil Case Assembly plays a vital role in Honda marine engine systems. This component acts as the housing for the lubricating oil, a key element in keeping internal engine components properly lubricated and protected. By securely containing and supporting the flow of oil, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM oil case assembly designed specifically