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Mahle plain piston ring set for a 4.170" bore with .043" ring thickness supplied as a service-grade set intended for engine rebuilds and maintenance. These plain rings are used to re-establish piston-to-cylinder sealing during rebuilds, helping restore compression and control oil consumption. The set suits machinists and shops needing correct-dimension rings for repowering or refreshing compatible engines.
Mahle Rings Performance Napier THM-13 4.170 x .043 Plain Ring Set
