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The Mahle OE plain ring set is a gas-nitrided steel piston ring kit sized 4.065 x .043 x .157 RW. Supplied as a plain ring set, it provides the sealing surface for compression and oil control during engine rebuilds. Dimensions are listed explicitly so you can match rings to 4.065-inch pistons when replacing worn rings or assembling a short block.
Mahle Rings Performance Gas Nitride Steel 4.065 x .043 .157 RW Plain Ring Set
