The Mahle OE moly ring set is offered with a performance plasma steel top ring sized 4.100in x 1.0mm and a .143in second ring, finished with HVOF moly treatment. These rings are specified to match particular engine dimensions and are intended for rebuilds or inventory where exact ring sizing is required for proper installation and combustion sealing.
Mahle Rings Performance Plasma Steel Top Ring 4.100in x 1.0MM .143in RW HVOF Moly Ring Set