12251-ZW1-014 Cyl Hd Gasket - Overview. The 12251-ZW1-014 Cyl Hd Gasket is an essential component in Honda marine engine systems. This cylinder head gasket is designed to create a secure seal between the cylinder head and engine block, preventing leaks of combustion gases and coolant. By maintaining a reliable seal, it ensures the engine operates efficiently and avoids overheating or engine damage. Tailored specifically for Honda marine applications, it ensures seamless integration with existing