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The Mahle OE plain ring bulk pack includes gas-nitrided steel plain rings sized 4.040 x .043 x .157 RW in a 48-count bulk pack. These plain rings are intended for compression sealing and oil control during engine assembly and rebuilds. The bulk quantity benefits shops or rebuilders who require multiple matched sets for pistons with a 4.040-inch diameter.
Mahle Rings Perf Gas Nitride Steel 4.040 x .043 .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)
