A bearing assembly for a gas turbine engine comprising: a bearing housing comprising a first bearing housing surface and a second bearing housing surface where the first and second bearing housing surfaces are substantially axially parallel relative to a rotor centerline; a first piston ring groove in the first bearing housing surface , a second piston ring groove in the first bearing housing surface , a first piston ring disposed in the first piston ring groove and a second piston ring disposed in the second piston ring groove ; a squeeze film damper including a first outer surface radially adjacent to and opposing the first bearing housing surface ; a second outer surface radially adjacent to and opposing the second bearing housing surface ; a third piston ring groove in the second outer surface , a fourth piston ring groove in the second outer surface , a third piston ring disposed in the third piston ring groove and a fourth piston ring disposed in the fourth piston ring groove ; wherein one of the second piston ring and the second piston ring groove includes a pass-through feature and at least one of the fourth piston ring and the fourth piston ring groove includes a pass-through feature , and wherein each of the pass through features has a high diodicity; and the bearing housing comprising a damping fluid passage configured to provide a damping fluid from an outlet to a first gap radially between the first outer surface and the first bearing housing surface and to a second gap radially between the second outer surface and the second bearing housing surface . a bearing housing comprising a first bearing housing surface and a second bearing housing surface where the first and second bearing housing surfaces are substantially axially parallel relative to a rotor centerline; a first piston ring groove in the first bearing housing surface , a second piston ring groove in the first bearing housing surface , a first piston ring disposed in the first piston ring groove and a second piston ring disposed in the second piston ring groove ; a squeeze film damper including a first outer surface radially adjacent to and opposing the first bearing housing surface ; a second outer surface radially adjacent to and opposing the second bearing housing surface ; a third piston ring groove in the second outer surface , a fourth piston ring groove in the second outer surface , a third piston ring disposed in the third piston ring groove and a fourth piston ring disposed in the fourth piston ring groove ; wherein a first outer surface radially adjacent to and opposing the first bearing housing surface ; a second outer surface radially adjacent to and opposing the second bearing housing surface ; a third piston ring groove in the second outer surface , a fourth piston ring groove in the second outer surface , a third piston ring disposed in the third piston ring groove and a fourth piston ring disposed in the fourth piston ring groove ; wherein one of the second piston ring and the second piston ring groove includes a pass-through feature and at least one of the fourth piston ring and the fourth piston ring groove includes a pass-through feature , and wherein each of the pass through features has a high diodicity; and the bearing housing comprising a damping fluid passage configured to provide a damping fluid from an outlet to a first gap radially between the first outer surface and the first bearing housing surface and to a second gap radially between the second outer surface and the second bearing housing surface . <EOS>