41100-ZVL-701ZB Gear *NH565* Case - Overview. The 41100-ZVL-701ZB Gear *NH565* Case is an essential component within Honda marine engine systems. It serves as the durable housing for the gear mechanism, playing a critical role in the smooth operation of the transmission system in marine outboards. Designed for precise integration, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM gear case assembly designed specificall