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The Mahle OE moly ring set for Chevrolet big-block engines (396/421; 1963–1969) brings MAHLE’s OE-focused piston ring design to classic engine rebuilds. Engineered to reduce friction and ring mass while limiting oil consumption, these rings aim to improve longevity relative to older ring designs. They serve as an OEM-replacement option for restorations needing reliable oil control.
Mahle Rings GM 396/421 63-69 Moly Ring Set
