41100-ZVP-010ZA Gear Nh565 Case - Overview. The 41100-ZVP-010ZA Gear Nh565 Case is an essential component of Honda marine engine systems. This gear case assembly supports the gearbox system, housing the gears that drive the propeller shaft, ensuring smooth and reliable operation of your marine vessel. Engineered to integrate seamlessly with existing parts, it maintains optimal performance and durability, contributing to the overall efficiency and longevity of your marine engine.. Key Features. G