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The Mahle OE plain piston ring set is a gas-nitrided steel plain ring package sized 4.130 in diameter with .043 in thickness and .157 RW. Sold as a single plain ring set for piston replacement and rebuilds, the set follows the listed performance gas-nitride steel specification and provides the exact dimensional match required by engines calling for this size.
Mahle Rings Performance Gas Nitride Steel 4.130 x .043 .157 RW Plain Ring Set
