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Mahle plasma-moly compression ring set is sized for a 4.280 in bore with a .0625 in section and .190 in thickness, intended for engine rebuilds and replacements. The plasma-moly top ring surface offers improved wear resistance over standard rings while maintaining OE-style ring geometry for consistent sealing. Suitable for shops and builders needing reliable, repeatable ring performance.
Mahle Rings Plasma Moly Steel Top Compression Ring 4.280in x .0625in .190in RW Moly Ring Set
