41100-ZV1-840ZA Gear *NH210MC* Case - Overview. The 41100-ZV1-840ZA Gear *NH210MC* Case is an essential component in Honda marine engine systems. It plays a critical role in housing and protecting the gear mechanisms responsible for transmitting power efficiently. Designed specifically for the Honda gear system, this case supports reliable mechanical operation and ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine Honda Ge