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The Mahle file-fit piston ring set for a 4.045 in bore (+0.005 in) includes 1.0mm top, 1.0mm second and 2.0mm oil rings. Intended for engine rebuilds where rings must be finished to fit, these oversize rings are filed to final end-gap and clearance. The file-fit design gives machine shops and DIY rebuilders the control needed to match rings to bore dimensions.
Mahle MS 4.045in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings
