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The Mahle OE plain ring set is a gas-nitrided steel piston ring kit sized 4.010 x .043 x .157 RW. Offered as a plain ring set, it provides the sealing surfaces for compression and oil control in engine rebuilds and short block assembly. The explicit 4.010-inch dimensions in the listing let you match rings accurately to pistons when replacing worn rings or building an engine.
Mahle Rings Performance Gas Nitride Steel 4.010 x .043 .157 RW Plain Ring Set
