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The Mahle file-fit piston ring set for a 4.030 in bore (+0.005 in) includes 1.0mm top, 1.0mm second and 2.0mm oil rings. Supplied oversize for trimming to final specification, these rings are intended for engine rebuilds where end-gap must be filed to match cylinder bores. The file-fit design gives installers control to achieve correct ring seating and clearance.
Mahle MS 4.030in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings
