41100-ZVT-010ZC Gear NHB14M Case - Overview. The 41100-ZVT-010ZC Gear NHB14M Case is a critical component in Honda marine engine systems. This gear and case assembly supports the drivetrain system, ensuring reliable mechanical motion transfer and protection within the lower unit of marine engines. Designed specifically for Honda applications, it maintains optimal engine performance by providing seamless integration with existing parts, maintaining durability and precise operation.. Key Features.