40201-ZY3-020ZA Case *NH282MU* - Overview. The 40201-ZY3-020ZA Case *NH282MU* is a crucial component in Honda marine engine systems. This extension case supports the midsection of outboard engines, playing an essential role in maintaining structural integrity and protection of internal components. Engineered to meet exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM part designed specifical