41100-ZVL-600ZB Gear Nhb14m Case - Overview. The 41100-ZVL-600ZB Gear Nhb14m Case is a crucial component in Honda marine engine systems. It serves as a protective housing for the gear assembly, specifically the NHB14M variant, which is involved in the transmission of power from the engine to the propeller. This gear case ensures the smooth operation of the marine propulsion system, preventing damage to internal gears and maintaining optimal mechanical function. Designed to meet Honda factory spe