30587-ZW2-F01 Case - Overview. The 30587-ZW2-F01 Case is a critical component within Honda marine engine systems, specifically designed to house the ignition control module (CDI). Serving as a protective casing, it helps safeguard key electronic components from environmental factors and mechanical damage, ensuring the smooth and reliable operation of your marine engine. Precision engineered for Honda engines, it ensures seamless integration with existing parts, maintaining optimal performance an