41100-ZVL-801ZB Gear NHB14M Case - Overview. The 41100-ZVL-801ZB Gear NHB14M Case is a critical component designed for Honda marine engine systems. Its primary function is to support the gear system by housing the gear assembly securely, ensuring reliable mechanical motion and seamless power transfer within the engine. Engineered to precise factory specifications, this gear case provides a perfect fit with existing components, maintaining optimal performance and durability.. Key Features. OEM ge