| Part Number | OEM Number | Sensor | Additional Info |
| BN-414A1 | left body: 253AAW3228, right body: 252AAW3233 | 1 sensor in left neck, 1 sensor in right neck, 1 sensor 3" below left body, 1 sensor 3 1/4" below right body | both formed flange inlets, pipe outlet, 3 1/2" front left neck, 2 1/2" front right neck |