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The Mahle OE plasma moly ring set for a 4.187 in bore is a ductile, high-tension piston ring kit specified with .017 in end gap and standard 1/16 in and 3/16 in ring widths. Intended for engine rebuilds that require durable sealing, these moly-faced rings offer reliable wear resistance and heat tolerance; installers should follow engine builder specifications for correct gap setting and installation practice.
Mahle Rings 4.187in Bore .017in Dykes1/16in3/16in Plasma Moly Ductile High Tension Moly Ring Set
