| Part Number | Description |
| 41X1221 | 250-SHEET TRAY INSERT (OPTIONAL TRAY) |
| 41X1222 | 550-SHEET TRAY INSERT (OPTIONAL TRAY) |
| 41X2300 | ACCESS COVER LINK |
| 41X4421 | BEZEL (BLANK) |
| 41X4413 | BEZEL FOR MS531 |
| 41X1988 | CARTRIDGE BARREL SENSOR KIT |
| 41X1237 | CARTRIDGE GEAR BOX |
| 41X4359 | CONTROL PANEL DISPLAY 2.8-INCH |
| 41X4547 | CONTROL PANEL FFC |
| 41X4412 | CONTROL PANEL FRONT COVER |
| 41X4151 | CONTROLLER BOARD FOR MS531, MS631 |
| 41X2259 | COOLING FAN |
| 41X1176 | DUPLEX ASSEMBLY |
| 41X4214 | DUPLEX GEAR KIT |
| 40X8520 | COVER, DUST 250 SHEET TRAY |
| 41X4154 | ENGINE BOARD |
| 41X1163 | FRONT COVER |
| 41X1184 | FRONT INPUT GUIDE |
| 41X4537 | MX63X SVC CABLES FRONT USB |
| 41X2255 | FUSER ACTUATOR |
| 41X1178 | FUSER 110V |
| 41X1179 | FUSER 220V |
| 41X1026 | HARD DISK DRIVE, USB |
| 40X8044 | SENSOR, INDEX |
| 41X2854 | INTELLIGENT STORAGE DRIVE |
| 41X4549 | MX63X SVC CABLES INPUT OPTION |
| 41X1183 | JAM ACCESS COVER |
| 41X1167 | LEFT COVER |
| 41X1224 | MAIN DRIVE GEAR BOX |
| 41X5024 | MAINTENANCE KIT 400K, 110 V FOR MS53X AND MS63X |
| 41X5025 | MAINTENANCE KIT 400K, 220 V FOR MS53X AND MS63X |
| 41X1182 | MPF GEAR BOX |
| 41X1197 | MFP PICK ROLLER AND SEPARATOR PAD |
| 41X1213 | MPF SOLENOID |
| 41X1218 | MPF WITH FRONT ACCESS COVER (MX321, MX522) |
| 41X1225 | MAINTENANCE KIT MS620 SERIES, 110V 200K PAGES |
| 41X1226 | MAINTENANCE KIT MS620 SERIES 220V |
| 41X0775 | NON-LOCKING CASTER |
| 41X4148 | SVC TRAY 250 TRAY COMPLETE OPTION |
| 41X4149 | SVC TRAY 550 TRAY COMPLETE OPTION |
| 41X2262 | OUTPUT EXTENDER |
| 41X4453 | SENSOR PAPER PRESENT FLAG |
| 41X1239 | PICK ROLLERS, OPTIONAL TRAY |
| 41X1223 | PICK ROLLER ASSEMBLY |
| 41X2391 | PICK ROLLER CLUTCH |
| 41X4411 | MS63X SVC POWER SUPPLY POWER SUPPLY, 100 |
| 41X4410 | MS63X SVC POWER SUPPLY POWER SUPPLY, 230 |
| 41X0764 | PRINTER STAND |
| 41X1185 | PRINTHEAD MS321 MS421 MS521 MS621 MS622 MX321 MX421 MX521 MX522 MX622 |
| 41X2263 | REAR ACCESS DOOR |
| 41X1169 | REAR DOOR AND COVER |
| 41X4425 | REDRIVE FOR MS531 |
| 41X2268 | REDRIVE GEAR PLATE |
| 41X1214 | REVERSE SOLENOID |
| 41X1233 | CONTROLLER BOARD ACCESS COVER |
| 41X1165 | RIGHT COVER (MX321, MX421) |
| 41X4548 | MX63X SVC SENSOR DUPLEX SENSOR AND INPUT |
| 41X1209 | SENSOR (FRONT DOOR) |
| 41X1210 | SENSOR (MPF PAPER PRESENT) |
| 41X1238 | SENSOR,HOLE PUNCH BOX PRESENT,TRAY PR ESENT,PAPER PRESENT |
| 41X1212 | SEPARATOR ROLLER ASM |
| 41X1220 | STANDARD 250-SHEET TRAY INSERT (MX521 , MX522) |
| 41X1162 | TONER CARTRIDGE SMART CHIP CONTACT |
| 41X4456 | MS51X SVC SENSOR TONER DENSITY |
| 41X1171 | TOP COVER |
| 41X2873 | TRUSTED PLATFORM MODULE (TPM) CARD |
| 41X4177 | WIRELESS CARD (MARKNET N8450) |
