41100-ZVT-700ZB Gear NH565 Case - Overview. The 41100-ZVT-700ZB Gear NH565 Case is a vital part of Honda marine engine systems. It serves as the main housing for the gear assembly in the transmission system, supporting the smooth transfer of mechanical power. Designed to meet exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM part designed specifically for Honda marine applications, support