50201-Zvp-000Zb Case *Nhb14m* - Overview. The 50201-Zvp-000Zb Case *Nhb14m* is a critical component in Honda marine engine systems. This swivel case functions as a housing designed to protect and support internal engine components essential for reliable operation. Manufactured to exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM component that matches factory specifications, dimensions, an