50201-ZV1-C01ZB Case *NHB14M* - Overview. The 50201-ZV1-C01ZB Case *NHB14M* is a critical component designed specifically for Honda marine engine systems. This case serves as the swivel housing, playing a vital role in enclosing and protecting internal moving parts while ensuring reliable operation within the marine propulsion system. Designed to OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Hon