41100-ZVL-602ZB GEAR *NHB14M* CASE - Overview. The 41100-ZVL-602ZB Gear NHB14M Case is a critical component in Honda marine engine systems. Designed to house and protect the gear assembly known as NHB14M, this case plays an essential role in maintaining the integrity and smooth mechanical operation of the marine propulsion system. As a durable and precise part, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM ge