41100-ZZ3-E13ZC Gear Nhb14m Case - Overview. The 41100-ZZ3-E13ZC Gear Nhb14m Case is a vital component within Honda marine engine systems. This gear case assembly supports the gearbox system by housing and protecting the gears in the lower unit of the outboard motor. By keeping internal gears properly aligned and shielded, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This gear case assembly serves as a protective housing for