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The Mahle OE plain piston ring bulk set is built from gas-nitrided steel and specified at 4.115 in x .043 in, .157 RW, offered in 48-count bulk packs for workshop stocking. These plain rings are intended for piston rebuilds and repeated replacement needs, delivering consistent dimensional control across multiple sets so technicians can reach for the correct size during overhauls.
Mahle Rings Perf Gas Nitride Steel 4.115in x .043in .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)
