The Honda 12251ZF5000 is a genuine OEM cylinder head gasket designed for Honda GX340, GX390, GX420, and GX440 series engines. This essential engine component ensures a proper seal between the cylinder head and engine block, preventing leaks and maintaining optimal engine compression. It is also compatible with a wide range of Honda power equipment including generators (EB5000, EB6500, EG5000, EG6500, EM5000, EM6500, EU6500, EV6010), tillers (FRC800), lawn mowers (HR216, HR217, HRX217, HW216), snow blowers (HS1132, HS1332, HSS1332, HSS970), and water pumps (WB20, WB30, WT20, WT30, WT40).