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Mahle file-fit piston ring set sized 4.070"+0.005 with ring sections 1/16, 1/16 and 3/16 inches intended for custom fitting during engine assembly. These rings are supplied as individual file-fit components so a machine shop can lap them to exact cylinder tolerances. The brief specification highlights sawn widths and oversize bore sizing; proper installation requires typical ring-filing and measurement practices for a correct fit.
Mahle MS 4.070in+ .005in 1/16in 1/16in 3/16in File Fit Rings
