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This Mahle OE plain top compression ring set is a gas-nitrided steel performance ring sized 4.255 x .043 with .170 RW, offered as a plain ring set. Mahle’s nitrided steel top ring construction suits performance rebuilds requiring OE-style sealing and consistent durability. The set is provided in the specified dimensions for correct piston-to-ring fit during engine assembly or repair.
Mahle Rings Gas Nitride Steel Performance Top Compression Ring 4.255 x .043 .170 RW Plain Ring Set
