12500-ZY6-000 Plug Hole Coil Cvr - Overview. The 12500-ZY6-000 Plug Hole Coil Cvr is a genuine Honda marine engine part designed to protect the spark plug hole coil system. This cover plays a crucial role in maintaining the integrity and reliability of the ignition coil area by shielding it from environmental contaminants such as water, dust, and debris. It ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Designed specifically for t