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The Mahle plain second-ring set is a Napier steel 2nd piston ring sized 4.050 in x 1.0 mm with .136 in RW, supplied as a 48-piece bulk pack. Intended for engine rebuilds and machine-shop use, these plain rings restore the second-ring sealing surface and oil-control characteristics where exact size matches are required during round or oversized bore service.
Mahle Rings Perf Napier Steel 2nd Ring 4.050in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack)
