40201-ZV1-843ZB Case *NH282MU* - Overview. The 40201-ZV1-843ZB Case *NH282MU* is an essential component of Honda marine engine systems, designed to support the extension case system. This OEM part plays a critical role in maintaining the structural integrity and protection of the marine engine's lower unit, ensuring durability and reliable operation under demanding marine conditions. Engineered to fit precisely with factory specifications, it ensures seamless integration with existing parts, mai