56000-ZY1-871 Power Tilt Assembly - Overview. The 56000-ZY1-871 Power Tilt Assembly is an essential component in Honda marine engine systems, specifically designed for the power tilt and trim system. This assembly electrically controls the tilting angle of the engine, allowing boaters to adjust engine trim while on the water to optimize performance and handling. As a key part of the marine power tilt system, it ensures seamless integration with existing parts, maintaining optimal performance and