Function: A replacement generator engine motor designed for GX120, GX160, and GX200 platforms, supporting 5.5HP and 6.5HP class generators. Compatibility: Fits GX120, GX160, and GX200 generator engines. Replacement part numbers: 28400ZE1003ZF and 28400ZH8013YA. Performance: Engine motor built for reliable starting and steady operation within the 5.5HP to 6.5HP range on small portable generators. Benefits: Restores original power delivery and generator performance, provides a straightforward replacement to maintain generator reliability, compatible with widely used GX series engines. Size and Material: Size and material details are not specified by the manufacturer. Use scenarios: Home backup power: keep essential lights and small appliances running during outages. Construction site: power tools and lighting on portable generators. Outdoor events or recreational use: dependable power for equipment and concessions. Installation and compatibility notes: Confirm part numbers 28400ZE1003ZF or 28400ZH8013YA match your generator model before replacement; follow standard installation guidelines for GX series engines to ensure proper fit and operation.