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Mahle OE plasma-moly top compression ring set sized 4.020" x .0625" with .190" RW specification. The listing describes a steel top compression ring with plasma moly surface intended for rebuilds or replacements requiring precise ring dimensions. It’s meant for engine assemblies where OE-style ring geometry and a wear-resistant top ring are specified.
Mahle Rings Performance Plasma Moly Steel Top Compression Ring 4.020 x .0625 .190 RW Moly Ring Set
