Benz piston ring 91mm 1) Treatmet : Phosphated ,Nitrided ,Chrome plated 2) Certification: ISO16949:2009 3) More stock Benz piston ring 91mm series :1. Dia from 82.90mm---130.00mm2.Engine Type : M 103/190 E 2.6/260E/SE ,M110/M123 ,280E/CE ,OM601/602/603 ,OM602A ,OM603A ,OM605LA ,OM606LA ,M115/200 ,OM615/200D ,M103/104/300E ,M102/190 200 ,OM601/602 ,M111/161 ,OM616 OM617A ,240D/240GD/L207/307/407D ...