41100-ZVL-901ZC Gear Nhb14m Case - Overview. The 41100-ZVL-901ZC Gear Nhb14m Case is a genuine Honda marine engine component essential for the marine propulsion system. It supports the lower unit system by housing and protecting the internal gears responsible for mechanical motion and power transmission in marine engines. Precision-engineered for Honda applications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Gea