41101-ZY6-020ZB Gear Nhb14m Case - Overview. The 41101-ZY6-020ZB gear NHB14M case is a vital component of Honda marine engine systems. This gear case assembly supports the propulsion system by housing the gears that transfer power from the engine to the propeller. Designed for durability and seamless integration, it ensures smooth mechanical motion and protects internal components from water intrusion and mechanical damage, maintaining optimal performance and reliability.. Key Features. Genuine