| Part Number | Description |
| 44357501 | BEARING: FEED L, B431dn |
| 44557601 | Cable FFC 28P (ADD), B431dn |
| 44559002 | Cassette (250sht Black), B431dn |
| 44559001 | Cassette (250sht), B431dn |
| 44767401 | CLAMP: CABLE, B431dn |
| 44261403 | Clutch 3.5, B431dn |
| 44261405 | Clutch 4.5, B431dn |
| 44430402 | CONN Cord AMP8P AMP8P, B431dn |
| 44569601 | CONNECTOR: AMP2P AMP2P, B431dn |
| 44560901 | CONNECTOR: AMP3P JST3P, B431dn |
| 44561001 | CONNECTOR: AMP4P AMP3P, B431dn |
| 44560204 | Cover OPE (B31 Black), B431dn |
| 44560201 | Cover OPE (B431 beige), B431dn |
| 44564302 | COVER: MPT (B431 BLACK) |
| 44564904 | COVER: STACKER (B431 BLACK) |
| 44564902 | COVER: STACKER (B431), B431dn |
| 44563701 | Duplex , B431dn |
| 44359201 | Frame MPT beige, B431dn |
| 44359202 | Frame MPT black, B431dn |
| 43922401 | Frame , Separator, B431dn |
| 44384701 | Frame Retard, B431dn |
| 44559301 | Frame TR, B431dn |
| 44561502 | Front , B431dn |
| 44565805 | Fuser (120V), B431dn |
| 44565806 | Fuser (230V), B431dn |
| 51229201 | GEAR: EJECT ROLLER IDLE, B431dn Black |
| 44362601 | GEAR: MPT CL Z28, B431dn |
| 44563801 | Guide Eject L, B431dn |
| 44557701 | LED Head Unit 61TRA, B431dn |
| 44549901 | Lever End Sub, B431dn |
| 44549801 | Lever End, B431dn |
| 44473601 | Lever Sensor Cassette, B431dn |
| 44365701 | Lever Sensor Exit, B431dn |
| 44361301 | Lever Sensor IN, B431dn |
| 44361401 | Lever Sensor WR, B431dn |
| 44558301 | Motor DC (Main), B431dn |
| 44519301 | Motor Pulse, B431dn |
| 44557101 | MOTOR: FAN, B431dn |
| 44554001 | OR Board 97H HVPS, B431dn |
| 44555101 | OR Board 97T, B431dn |
| 44655901 | PCB: Maintenance (B431dn), B431dn |
| 55118801 | PCB: PU FOR B431DN+, B431dn |
| 55631301 | Photo Interrupter, B431dn |
| 44342305 | PWR unit ACDC Switch 120V, B431dn |
| 44342302 | PWR Unit ACDC Switch 230V, B431dn |
| 44135601 | Roller Feed, B431dn |
| 44432101 | Roller Transfer, B431dn |
| 44483301 | Roller Hopping, B431dn |
| 44483601 | Roller PickUp, B431dn |
| 44361602 | Roller Regist, B431dn |
| 44364301 | Shaft Eject, B431dn |
| 44362101 | Shaft Roller Feed, B431dn |
| 44509801 | Spring Contact, B431dn |
| 44550001 | Spring Lever End, B431dn |
| 44361501 | Spring Sensor 016, B431dn |
| 44365901 | Sprint Sensor Exit, B431dn |
| 56218101 | SWITCH: MICRO D2X C, B431dn |
