40201-ZVL-A10 Extension Case - Overview. The 40201-ZVL-A10 Extension Case is a vital component within Honda marine engine systems. This extension case supports the rigging and mounting system, helping to extend the power take-off or mounting capabilities essential for specific marine configurations. Designed for durability and reliability, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda marine part designed to