... ringE&E Turbo Company supplies quality turbocharger piston ring to the independent aftermarket, originally manufactured by Garrett, Borg Warner (Schwitzer & 3K ... , 49177-23100NN131577, NH261604, NH261605, NN131576, NH261604, NH261605, NN171107, NH191305, NH261605 various kinds of Stepped gap Piston ring