Mahle OE chrome oil ring assembly in bulk offers performance oil rings sized to 3.9370" bore with 2.5mm and .129" specifications for standard-tension chrome ring applications. Supplied in a bulk quantity, this set matches the stated dimensions for engine rebuilds requiring that precise ring size and tension profile.
Mahle Rings Perf Oil Ring Asbly. 3.9370 x 2.5MM .129in RW Std Tension Chrome Ring Set (48 Qty Bulk)