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Mahle MS file‑fit piston rings are offered for a 4.125"+0.005 bore with ring sizes of 1/16, 1/16 and 3/16" (top, second and oil rings). These file‑fit rings are supplied for precision gap setting during installation and intended for custom bore finishing. The matched set format supports consistent sealing and ring gap control when assembling engines that require a small positive oversize and hand‑fitted ring end gaps.
Mahle MS 4.125in+ .005in 1/16in 1/16in 3/16in File Fit Rings
