11321-ZY6-000ZA Oil *NH8* Case - Overview. The 11321-ZY6-000ZA Oil *NH8* Case is a genuine Honda marine engine part essential for the engine lubrication system. It serves as the oil housing case, designed specifically for Honda marine engines, to protect and maintain the oil flow that lubricates and cools the engine components effectively. Made with precision to meet factory specifications, this oil case ensures seamless integration with existing parts, maintaining optimal performance and durabi