We offer valve guide. Premium quality centrifugally cast valve guides with precise machiningcylindrical grinding to match geometrical parametersclose clearance of 20microns in inside diameter and 15 microns on outside diameterusing quality grey cast iron, brass, bronze and copper backed materials100% dimensional inspection in process and finished componentsmaterial and image analysis, hardness tests and profile testing is applied25 years of manufacturing experience and expertise with one roof manufacturing outlet