Mahle OE plasma-moly ring set offered in a 48-piece bulk pack for a 4.100 in bore with ring dimensions of 1.5 mm x .151 RW. The listing identifies the rings as Plasma Moly Steel and supplies quantity sufficient for multiple rebuilds or inventory stocking, matching engines that require these specific bore and ring width specifications.
Mahle Rings Plasma Moly Steel 1.5MM x .151 RW 4.100in Bore Diameter Moly Ring Set (48 Qty Bulk Pack)