Perkins piston rings OEM No.: 4181A026, 4181A041,4181A019,4181A022, 4181A009,4181A005,4181A017. Piston ringsDifferent treatment: Phosphated, Nitrided, Chrome platedTS16949 certificated, CE qualificationPerkins piston ringsOEM No.: 4181A026, 4181A041,4181A019,4181A022,4181A009,4181A005,4181A017. We could supply piston rings from many brand:Cat, Cummins, Hino, Isuzu, Komatsu, Mitsubishi, Toyota, ...