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Mahle OE plain ring set in Gas Nitride Steel sized 4.185 in with .043 in thickness and .157 RW is a standard replacement ring for pistons that match those dimensions. Specify these nitrided plain rings when your rebuild calls for the exact bore size and ring thickness so fit and sealing can be achieved during engine assembly or repair.
Mahle Rings Performance Gas Nitride Steel 4.185 x .043 .157 RW Plain Ring Set
