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The Mahle OE plasma moly steel top compression ring set, size 4.625 in x 1.0 mm .143 RW, is a bulk-pack offering intended for engine builders and machine shops needing consistent top compression rings. These rings use a plasma-moly coating on a steel substrate to provide the sealing surface specified in the product title. Sold as a 48-piece bulk pack for repeated use in piston rebuilds and machining operations where this specific diameter and wall thickness are required.
Mahle Rings Perf Plasma Moly Steel Top Comp Ring 4.625in x 1.0MM .143 RW Ring Set (48 Qty Bulk Pack)
