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The Mahle OE plain piston ring set features gas-nitrided steel and precise 4.105 x .043, .157 RW sizing to support piston sealing during engine overhaul and replacement. As a plain ring set matched to the listed dimensions, it provides the correct diameter and running width for installations where exact ring sizing is required to restore compression and proper engine function.
Mahle Rings Performance Gas Nitride Steel 4.105 x .043 .157 RW Plain Ring Set
