| Description | Part Number |
| 1024MB DDR2-DRAM | 40X5303 |
| 256MB DDR2-DRAM | 40X5301 |
| 256MB flash card | 40X5704 |
| 512MB DDR2-DRAM | 40X5302 |
| Antenna for wireless card | 40X5319 |
| Bin full sensor with cable | 40X5121 |
| Cable, 14-pin JST cable for ISP interface cable | 40X5316 |
| Cables parts packet | 40X5135 |
| Card for IPDS and SCS/TNe, C734, C736 | 40X0063 |
| Cartridge cooling fan | 40X5108 |
| Color-On-Demand assembly | 40X5122 |
| Contact springs | 40X5137 |
| Cooling fan | 40X5109 |
| Cooling fan filter | 40X5287 |
| Drawer, 550-sheet Drawer (with tray) | 40X5140 |
| Duplex reference edge asm | 40X5113 |
| Dust cover | 40X5153 |
| EP drive assembly | 40X5125 |
| Forms and Bar code card, C734, C736 | 40X0038 |
| Front access door cover | 40X5110 |
| Front door | 40X5112 |
| Front door parts packet | 40X5111 |
| Fuser assembly, 110-120V | 40X5093 |
| Fuser assembly, 220-240V | 40X5094 |
| Hard disk, T65x, X46x, X65x | 40X4822 |
| High-voltage power supply | 40X5129 |
| ISP standoff with thumbscrew | 40X5317 |
| ISP thumbscrew (2) | 40X5315 |
| Left bellcrank with spring | 40X1447 |
| Left cover | 40X5102 |
| Lexmark PrintCryption card | 40X5952 |
| Low voltage power supply | 40X5124 |
| Motor driver card | 40X5126 |
| MP feeder / duplex drive parts packet | 40X5132 |
| MP feeder / duplex motor | 40X5131 |
| Operator panel bezel, 230, 280 | 40X5115 |
| Operator panel buttons parts package | 40X5120 |
| Operator panel with card | 40X5117 |
| Output bin extension cover | 40X5106 |
| Paper pick assembly | 40X5134 |
| Paper tray, 550-sheet | 40X5273 |
| Parallel 1284-B interface card | 40X4823 |
| Parts packet, ISP thumbscrew and standoff | 40X1556 |
| Pick arm roller | 40X5152 |
| Pick tires | 40X5168 |
| Power cord; 2.5 m, 8 ft. Right angle, US, CA, LA | 40X0269 |
| Printhead | 40X5123 |
| Rear frame cover | 40X5145 |
| Rear left cover | 40X5104 |
| Rear right cover | 40X5105 |
| Rear upper cover | 40X5103 |
| Right bellcrank asm with spring | 40X1446 |
| Right cover | 40X5101 |
| RS-232C serial interface card | 40X4819 |
| Specialty media Drawer (with tray) | 40X5142 |
| Specialty media tray | 40X5143 |
| Switch, 24 V interlock switch | 40X5128 |
| Switch, 5 V interlock switch | 40X5127 |
| System board (network), 5026-210/ 230/ 280 | 40X5160 |
| System board support shield | 40X5107 |
| Toner level sensor | 40X1416 |
| Top access cover | 40X5114 |
| Top access cover links (slider cam) | 40X5119 |
| Top access cover parts package | 40X5118 |
| Top cover | 40X5099 |
| Top cover camshaft | 40X5130 |
| Transfer module | 40X5096 |
| Tray, 550-sheet tray | 40X5141 |
