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Mahle OE moly top compression ring set—4.2900" diameter by 5/64" section—provides a replacement compression ring with a moly-faced design intended for the top ring position. Sold as a standard ring set, it supplies direct-fit ring dimensions for rebuild or repair. This straightforward component is specified for engine reconditioning where exact ring size and moly facing are required.
Mahle Rings 4.2900in X 5/64in Moly Claimer Top Compression Ring Moly Ring Set
