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The Mahle OE plain ring bulk pack contains gas-nitrided steel plain rings sized 4.025 x .043 x .157 RW in a 48-count bulk pack. These plain rings serve compression sealing and oil control functions during engine assembly and rebuilds. Bulk packaging supports repeated installations for pistons that require the 4.025-inch dimension and eases selection for shop use.
Mahle Rings Perf Gas Nitride Steel 4.025 x .043 .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)
