... 4)All the parts strictly meet the original equipm cylinder liner kit for COMMINS,HOWO,STEYR,SHANNXI(DENGLONG)1.Including1) ... piston ring2)piston3)piston pin4)cylinder linerThe materials for cylinder liner is boron and chromium alloy cast iron, metallographic structure ... sided carburizing heat treatment process.2. We have following cylinder liner kit on stores Cummins6CT(230P) / 6CT(240P) / 6CT(260P) / ...