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Mahle OE performance plasma steel top ring, 4.270 in x 1.0 mm with .143 in RW HVOF moly coating, is offered in bulk packaging for professional engine builders. The plasma steel surface treatment and moly layer aim to improve initial break-in and sealing properties expected of OE-grade replacement rings, making this set suitable where the specified dimension and finish are required for reliable piston sealing.
Mahle Rings Perf Plasma Steel Top Ring 4.270in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)
