Honda GX270 Replacement - Cylinder Head Assembly

Complete cylinder head assembly for Honda GX270 engines (8HP & 9HP). Includes valves, springs, rocker arm assembly, gaskets, bolts, studs, and retainer. Replaces OEM part numbers: 12200-ZH9-405, 12391-ZE2-000, and 12251-ZH9-000. Comes fully assembled and ready to install. Note: Honda discontinued the GX240-specific head; this GX270 head (12200-ZH9-405) is the industry service replacement for GX240 engines as well.