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The Mahle OE plain ring set is a gas-nitrided steel piston ring kit sized 4.045 x .043 x .157 RW. Offered as a plain ring set, it provides the necessary sealing surfaces for compression and oil control during engine rebuilds. The clear dimensional listing ensures you can pick rings that match 4.045-inch pistons when replacing rings or assembling a short block.
Mahle Rings Performance Gas Nitride Steel 4.045 x .043 .157 RW Plain Ring Set
