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The Mahle drop-in piston ring set for a 4.125 in bore includes 1.5 mm top and second rings and a 3.0 mm oil ring. These drop-in rings are intended for use in engine rebuilds or piston replacements to reestablish sealing and oil control. Use when matching a 4.125" bore and specified ring sizes to ensure proper ring gap and direct-fit installation without custom machining.
Mahle MS 4.125in 1.5mm 1.5mm 3.0mm Drop-In Rings
