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Mahle Performance plasma steel top ring sized for a 4.125" bore features HVOF molybdenum coating to resist scuffing and extend wear life. With a 1.0mm thickness and .143" radial width, this top ring is produced to precise tolerances for engine rebuilds requiring consistent dimensions and a hardened sealing surface at the combustion interface, supporting reliable ring-to-cylinder contact under normal operating conditions.
Mahle Rings Performance Plasma Steel Top Ring 4.125in x 1.0MM .143in RW HVOF Moly Ring Set
