The Mahle OE plain ring bulk pack includes gas-nitrided steel plain rings sized 4.020 x .043 x .157 RW in a 48-count bulk pack. These plain rings perform compression sealing and assist oil control for engine rebuilds and shop installation. The bulk quantity is useful for rebuilders who need multiple matched sets for pistons requiring the 4.020-inch specification.
Mahle Rings Perf Gas Nitride Steel 4.020 x .043 .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)