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The Mahle MS piston ring set is a file-fit replacement sized at 4.440" +0.005 to restore proper sealing in an engine rebuild. It includes 1.5 mm top and second rings with a 3.0 mm oil ring pack to manage combustion pressure and oil control. File-fit construction allows careful lapping and fitting to bore dimensions during assembly for accurate clearances and dependable sealing performance.
Mahle MS 4.440in+ .005in 1.5 1.5 3.0 mm File Fit Rings
