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The Mahle OE plain top ring set is specified for a 4.565" bore with a 1/16" thickness (PC479) as a direct replacement top ring option. Supplied as a plain ring configuration, these rings are intended for rebuilds or repairs where factory-equivalent plain top rings are required. Use when the listed bore and ring dimensions match the engine's specification.
Mahle Rings 4.565in Bore Dia 1/16in PC479 Top Rings Plain Ring Set
