40201-ZVP-000 Extension Case - Overview. The 40201-ZVP-000 Extension Case is a critical component designed to support Honda marine engine systems. Serving as an intermediary part, it facilitates the connection within the engine's assembly, ensuring smooth operation and reliable performance. Crafted as a genuine OEM component, this extension case guarantees precise fitment and integration, maintaining the Honda standard of durability and efficiency.. Key Features. Genuine OEM Extension Case desig