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The Mahle MS piston ring set is a file-fit replacement sized at 4.375" +0.005 for accurate bore sealing during engine rebuilds. The set uses 1.5 mm top and second rings with a 3.0 mm oil ring stack to control combustion pressure and oil consumption. File-fit construction lets a machinist lap and fit rings precisely to the cylinder during assembly for correct clearance and reliable sealing.
Mahle MS 4.375in+ .005in 1.5 1.5 3.0 mm File Fit Rings
