40201-ZV1-942ZA Case Nh210mc - Overview. The 40201-ZV1-942ZA Case Nh210mc is an essential extension case component designed for Honda marine engine systems. It supports the engine's lower unit by protecting internal components and ensuring reliable operation in various marine environments. Engineered to match the Aqua Silver Metallic-C color code (NH210MC), it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda Case e