12215-ZY3-A04ZA Cyln Head-Cam *NH8* - Overview. The 12215-ZY3-A04ZA Cyln Head-Cam *NH8* is an essential component for Honda marine engine systems. This cylinder head with camshaft controls valve timing for proper air and fuel intake and exhaust management, ensuring efficient engine operation. Precisely engineered, it guarantees seamless integration with existing parts, maintaining optimal performance and durability necessary in marine environments.. Key Features. Genuine Honda OEM cylinder head