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Mahle OE plain ring set is a performance-grade Napier steel second ring set sized 4.265in x 1.0mm with .136in RW specification. These plain rings serve to seal combustion and control oil on the piston skirt in high-usage or performance rebuilds. Supplied as a matched set to the listed dimensions, they are intended for engine assembly where those exact ring sizes are required.
Mahle Rings Performance Napier Steel 2nd Ring 4.265in x 1.0MM .136in RW Plain Ring Set
