41100-ZY3-E03ZB Gear *NHB14M* Case - Overview. The 41100-ZY3-E03ZB Gear *NHB14M* Case is a vital component of Honda marine engine systems. This gear case serves as a protective housing for the gears, supporting smooth and efficient transmission of mechanical motion within the marine propulsion system. Precisely engineered, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda part designed to meet factory specificati