11321-ZY1-405ZA Oil *NH282MU* Case - Overview. The 11321-ZY1-405ZA Oil *NH282MU* Case is a crucial component in Honda marine engine systems. It serves as the oil case housing, supporting the oil filtration and circulation system to keep the engine lubricated and running smoothly. Designed for Honda marine engines, this OEM part guarantees seamless integration with existing engine components, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM part designed specifical