| Part Number | Description |
| 40X2853 | ACM drive shaft |
| 40X2833 | cable misc. |
| 40X2808 | controller card, E450dn |
| 40X2828 | cooling fan |
| 40X2839 | cover rear upper and lower |
| 40X2835 | cover, top (includes narrow media sensor) |
| 40X2836 | cover left side |
| 40X2837 | cover right side |
| 40X5068 | cover top, right flag |
| 40X2825 | developer drive access door link |
| 40X2829 | developer drive coupling |
| 40X1366 | DIMM 128MB SDR |
| 40X1371 | DIMM 256MB SDR |
| 40X1364 | DIMM 32MB SDR |
| 40X1365 | DIMM 64MB SDR |
| 40X2823 | duplex and media sensor |
| 40X2841 | duplex complete |
| 40X2821 | duplex drive gear CBM |
| 40X1564 | flash card 32MB |
| 40X2857 | frame asm upper front |
| 40X2840 | front access cover |
| 40X2800 | fuser 110v |
| 40X2801 | fuser 220v |
| 40X2818 | LCD bezel cover, E450dn |
| 40X2811 | LCD operator panel E450dn |
| 40X2858 | legal extender dust cover |
| 40X2803 | LSU, printhead E350d / 352dn / E450dn |
| 40X2819 | LVPS / HVPS card , 110 v |
| 40X2820 | LVPS / HVPS card , 220 v |
| 40X2826 | main drive gear asm |
| 40X2847 | maintenance kit 110v |
| 40X2848 | maintenance kit 220v |
| 40X2830 | manual feed clutch CBM |
| 40X2838 | media (ACM) drive |
| 40X2843 | media drawer optional |
| 40X2834 | media exit guide |
| 40X2832 | media level indicator CBM |
| 56P1820 | paper feed, ACM tires (RO) |
| 40X2845 | pickup and manual feed selenoids |
| 40X2846 | reversing solenoid |
| 56P2076 | sensor (RO) toner low |
| 40X2813 | sensor cover open |
| 40X2824 | sensor manual input |
| 40X2856 | sensor narrow media |
| 40X2822 | transfer roll, bearings, gear, spring (CBM) |
| 40X2854 | tray 1 wear strips |
| 40X2844 | tray 2 |
| 40X2817 | tray 2 paper feed tire |
| 40X2855 | tray 2 wear strips |
| 40X2842 | tray main |
