41100-ZV7-090ZB Gear NHB14M Case - Overview. The 41100-ZV7-090ZB Gear NHB14M Case is a crucial component in Honda marine engine systems, specifically designed to house and protect the gears responsible for transmitting power from the engine to the propeller. This gear case assembly supports the marine gear system by ensuring reliable mechanical motion transfer while maintaining the integrity of the internal components. Engineered to fit perfectly and perform efficiently, it ensures seamless inte