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Mahle file‑fit piston ring set sized for a 4.350" bore with +0.005 tolerance, supplied as 1/16, 1/16 and 3/16" ring sections. These rings are intended for engine rebuilds and block machining where rings are trimmed or filed to fit exact bore dimensions. The file‑fit format gives a machinist control over end gap and seating during installation, supporting proper compression and oil control when fitted to spec.
Mahle MS 4.350in+ .005in 1/16in 1/16in 3/16in File Fit Rings
