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The Mahle OE plain ring set is a Napier steel second ring sized 4.150 in diameter with 1.0 mm thickness and .136 in radial width. Intended as a direct replacement ring for rebuilds requiring this exact measurement, it restores piston sealing and assists oil control on compatible engines. Suitable for technicians and enthusiasts sourcing precise OE-dimension rings for maintenance or repairs.
Mahle Rings Performance Napier Steel 2nd Ring 4.150in x 1.0MM .136in RW Plain Ring Set
