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This Mahle plasma-moly piston ring set fits a 4.135 in bore and combines reduced radial tension with ductile moly construction to balance sealing and reduced friction. The set is intended for engine rebuilds requiring these dimensions and offers plasma-moly surface characteristics to support consistent ring seating and oil control during normal operation in compatible engines.
Mahle Rings 4.135in Bore .043in1.5MM3.00MM Plasma Moly Ductile Low Tension Reduced Rad Moly Ring Set
