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The Mahle MS file-fit piston ring set supplies precision rings for engines with a 4.310 in bore (+0.005). This file-fit set includes top and second rings sized 1/16 in each and a 3/16 in oil ring, intended for custom fitting during engine assembly. These rings are specified for rebuilds where exact bore tolerances require careful fitting to ensure reliable sealing and oil control.
Mahle MS 4.310in+ .005in 1/16in 1/16in 3/16in File Fit Rings
