50201-ZVT-000ZC Case *NHB14M* - Overview. The 50201-ZVT-000ZC Case *NHB14M* is an essential housing component within Honda marine engine systems. It supports the swivel assembly system, providing integral protection and mounting structure critical for maintaining the precise alignment and operation of associated engine parts. Crafted to OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Specifically designed as