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The Mahle OE plain ring set is a top‑ring package sized for a 4.160‑inch bore with a 1/16‑inch section thickness (PC479) intended for engine rebuilds. These plain top rings are supplied to meet OE dimensions and fitment expectations for compatible pistons and bores. Use these rings as direct replacements when matching Mahle OE specifications is required during piston and cylinder service.
Mahle Rings 4.160in Bore Dia 1/16in PC479 Top Rings Plain Ring Set
