MAHLE Original Cast Piston and Ring Kit - 4.055 in Bore - 3.0 x 2.0 x 3.0 mm Ring Groove - Flat - Combustion Chamber - Driver Side - 6.6 L - GM Duramax ACCEL They are designed for 1962-79 WM485MD Size:Small (55) With Steam HolesSince 1989 EAS21974
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Ships within 48 hours · Estimated delivery Oct 1 - Oct 6