The Honda 12251Z0T801 is a genuine OEM cylinder head gasket designed for a wide range of Honda small engines, including the popular GX120, GX160, GX200, GCV160, GCV190, GC160, GC190, and GS190 series. This critical component ensures a proper seal between the cylinder head and engine block, preventing compression loss and oil/coolant leaks, maintaining optimal engine performance and longevity. It supersedes several previous Honda part numbers, ensuring compatibility and reliable fitment for various applications.