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, ... piston ringS6KT, 3116(7E5213), CAT110, 3204, 3208, D-330, D-336, D-333, D-334, 3304(2W6091),3306(9S3068)3307(2W1709), 3300, 3406 ... any way we can! Piston ring for Komatsu 6D105 engine