50201-ZVL-900ZC Case *NHB14M* - Overview. The 50201-ZVL-900ZC Case *NHB14M* is a genuine OEM swivel case designed for Honda marine engine systems. This essential component supports the engine's swivel system, playing a crucial role in ensuring smooth operation and reliable mounting within the outboard assembly. Engineered to factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This OEM swivel case is specifica