Piston Ring 1.Engine piston ring, auto piston ring 2.Different treatment:Phosphated, ... . 3.ISO9002,QS9000,TS16949 Piston Ringpiston ring for Komatsu 6D105 engine:1.piston ring material :nodular iron, cast iron, steel, ... W04C, W06D, EH100, H06CT, H06C, EH500, DS50, DS60, DS80, EH700, H07C,EH700-T1, H07D, H07CT, J07C, J08C, P10C-T1, EB400, EP100 ... any way we can! Piston ring for Komatsu 6D105 engine