50201-ZZ3-000ZA Case *NHB14M* - Overview. The 50201-ZZ3-000ZA Case *NHB14M* is a genuine OEM swivel case essential to the Honda marine engine systems. This part supports the swivel bracket system, playing a crucial role in housing and protecting key components within the marine engine assembly. By providing a durable enclosure for the swivel mechanism, it ensures smooth mechanical motion and reliability under marine operating conditions. Designed to meet strict factory specifications, it guarant