This cylinder base head gasket kit is designed for XR400R and XR400 motorcycle models manufactured between 1996 and 2004.The kit includes gaskets with part numbers 12251-MBV-013, 12391-KCY-671, and 12191-KCY-672.Made from metal and paper composite materials, it provides effective sealing, heat resistance, and corrosion resistance.The design supports engine performance under temperature and pressure conditions.Each package contains one complete set of gaskets for engine reassembly.