... mak 453ak ,mak 451ak ,mak 551ak ,mak552 ,cylinder head , cylinder liner ,piston ,valve spindle ,valve seat ,valve cage our company ... including cylinder liner ,cylinder head ,piston crown ,piston skirt ,valve housing ,valve seat & spindle etc.and it has 15 years and owns ... to serve more clients both at home and abroad .hanshin ,makita ,niigata ,daihatsu ,mak ,ito,kobe ,akasaka ,........ cylinder head