40201-ZY6-000ZA Case *NH282MU* - Overview. The 40201-ZY6-000ZA Case *NH282MU* is an essential component within Honda marine engine systems. This extension case serves as a protective housing, designed to maintain structural integrity and protect internal mechanisms from environmental elements. Engineered to factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine part engineered specifically for Honda