The Mahle OE plain piston ring set is a gas-nitrided steel plain ring package sized 4.135 in diameter with .043 in thickness and .157 RW, supplied as a 48-piece bulk pack. Intended for engine rebuilds and repair inventory, the bulk option keeps rings matched to Mahle OE dimensional specs so multiple pistons can be serviced from a single purchase.
Mahle Rings Perf Gas Nitride Steel 4.135in x .043in .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)