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The Mahle OE plain ring set is a performance steel Napier THM-13 piston ring package sized 4.095 in with 1.5 mm thickness and .151 ring width. As an individual plain ring set, it provides a direct replacement option for piston sealing and compression control in engine rebuilds that call for these exact dimensions.
Mahle Rings Performance Steel Napier THM-13 4.095 x 1.5MM .151 RW Plain Ring Set
