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The Mahle OE plasma-moly top ring is a replacement piston top ring made from Plasma Moly steel (HV385) sized for a 3.435 in bore with a 1.0 mm section width and .143 in RW specification. It functions as the compression/top ring in a piston ring set, offering wear-resistant sealing for engine rebuilds and individual cylinder servicing.
Mahle Rings Performance Plasma Moly Steel HV385 Top Ring 3.435in x 1.0MM .143in RW Moly Ring Set
