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The Mahle OE plain ring set supplies second rings made in Napier steel sized for a 4.185 in bore with 1.0 mm thickness and .136 in ring width as a matched plain ring set. These replacement rings are intended for engine rebuilds and maintenance where accurate ring dimensions matter to restore proper ring seating and compression control; specify the listed measurements to ensure correct fitment.
Mahle Rings Performance Napier Steel 2nd Ring 4.185in x 1.0MM .136in RW Plain Ring Set
