41100-ZVL-803ZA Gear Nh565 Case - Overview. The 41100-ZVL-803ZA Gear Nh565 Case is a crucial component within Honda marine engine systems. This gear case assembly supports the transmission system by housing the gears responsible for transferring mechanical power from the engine to the propeller. Engineered to exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM Gear Case Assembly, known