04605-Zy6-020 Cylinder Assembly Kit - Overview. The 04605-ZY6-020 Cylinder Assembly Kit is a high-quality genuine part designed for Honda marine engine systems. This crucial assembly supports the power trim and tilt system, ensuring smooth operation and reliability of your marine equipment. Manufactured to meet strict factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This Cylinder Assembly Kit acts as a fun