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Mahle file-fit piston ring set sized 4.280"+0.005 supplies three rings with 1.5 mm top and second rings and a 3.0 mm oil ring for precise bore restoration. File-fit construction lets technicians lap rings to exact cylinder dimensions during rebuilds or oversize repairs, restoring compression and oil control without assuming materials beyond the supplied sizing and fitment details.
Mahle MS 4.280in+ .005in 1.5 1.5 3.0 mm File Fit Rings
