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The Mahle OE plain ring set is a Napier steel second ring sized 4.145 in diameter with 1.0 mm thickness and .136 in radial width. Intended as a direct replacement for engine rebuilds that require this exact dimension, the ring restores piston sealing and helps control oil on compatible pistons. Appropriate for technicians and enthusiasts sourcing precise OE-dimension second rings.
Mahle Rings Performance Napier Steel 2nd Ring 4.145in x 1.0MM .136in RW Plain Ring Set
