| Part # | Description |
|---|---|
| RB2-1282 | Air Filter, Large |
| RB2-1283 | Air Filter, Small |
| RG5-5163 | Brake Asm |
| RG5-3309 | Brake Asm, 4500 (XXG and below) |
| RG5-5249 | Carousel Asm |
| RG5-5502 | Carousel Drive Asm |
| RG5-3400 | Cassette, 250-sheet |
| RG5-5200 | Control Panel |
| RG5-3228 | Coupler Asm |
| RG5-5151 | Cover, Left, 4500 (XXH and above)/4550 |
| RB2-1206 | Cover, Lower Rear |
| RB2-1205 | Cover, Rear |
| RB2-1203 | Cover, Right |
| RG5-5150 | Cover, Top, 4500 (XXH and above)/4550 |
| RG5-3809 | DC Controller, 4500 (XXG and below) |
| RG5-5254 | DC Controller, 4500 (XXH and above) |
| RG5-3281 | Density Sensor Asm, 4500 (XXG and below) |
| RG5-5149 | Density Sensor, 4500 (XXH and above)/4550 |
| RG5-3811 | Developing PCB, 4500 (XXG and below) |
| RG5-5180 | Developing PCB, 4500 (XXH and above) |
| RG5-5170 | Door Switch Asm |
| RG5-5152 | Drum Cover, 4500 (XXH and above)/4550 |
| RG5-5232 | Drum Drawer Cover, 4500 (XXG and below) |
| RG5-5230 | Drum Drawer, 4500 (XXG and below) |
| RG5-5142 | Drum Drawer, 4500 (XXH and above)/4550 |
| RG5-5206 | Drum Drive Asm |
| C4083A | Duplexer |
| RH7-5176 | Electromagnetic Clutch (CL2) |
| RH7-5178 | Electromagnetic Clutch (CL3) |
| RH7-5180 | Electromagnetic Clutch (CL4) |
| RG5-5135 | Face Down Delivery Asm |
| RH7-1346 | Fan, Large, 4500 (XXG and below) |
| RH7-1435 | Fan, large, 4500 (XXH and above) |
| RH7-1407 | Fan, Small |
| RF5-2092 | Feed Roller, Tray 2 |
| RG5-5117 | Feeder Asm (XXH and above)/4550 |
| C4084-6000x | Firmware Dimm, 4500 |
| C9130-6000x | Firmware Dimm, 4550 |
| C4084-67905 | Formatter, 4500 |
| C4227-69002 | Formatter, 4550 |
| RG5-5154 | Fuser |
| RG5-3227 | Fuser Motor |
| RG5-3285 | HVPS, 4500 (XXG and below) |
| RG5-5165 | HVPS, 4500 (XXH and above)/4550 |
| RG5-3808 | Interconnect PCB |
| RG5-5120 | ITB Drawer Asm |
| RG5-3320 | ITB Drawer Cover |
| RB2-1361 | ITB Drawer Handle |
| RH2-5400 | Laser Cable |
| RB1-9012 | Lifter Arm Left |
| RB1-9013 | Lifter Arm Right |
| RH3-2219 | LVPS |
| C4197A | Maintenance Kit |
| C7850-67901 | Memory DIMM, 128mb, 4550 |
| C4082A | Optional 500 Sheet Tray |
| RG5-3810 | Paper Feed PCB |
| RG5-3234 | Paper Size Sensor |
| RG5-3816 | Paper Size Sensor |
| RB2-0717 | Pickup Roller, Tray 1 |
| RB1-8865 | Pickup Roller, Tray 2, 3 |
| RG5-3325 | Rear Access Door |
| RH2-5335 | Ribbon Cable |
| RG5-5175 | Scanner |
| RB2-0734 | Separation Pad, Tray 1 |
| RF5-1885 | Separation Roller, Tray 2 |
| RG5-3245 | Solenoid Asm 4500 (XXG and below) |
| RG5-5119 | Solenoid Asm, 4500 (XXH and above)/4550 |
| RS5-6210 | Spacer For Rotary Drv Asm |
| RH7-1343 | Stepper Motor |
| RF5-2076 | Toner Access Cover 4500 (XXG and below) |
| RF5-3137 | Toner Access Cover, 4500 (XXH and above)/4550 |
| C4084-67909 | Toner Carousel Kit |
| RG5-5209 | Toner Cartridge Drive Asm |
| C4191A | Toner Cartridge, Black |
| C4192A | Toner Cartridge, Cyan |
| C4193A | Toner Cartridge, Magenta |
| C4194A | Toner Cartridge, Yellow |
| RG5-5247 | Toner Level PCB, 4550 |
| RG5-3300 | Top Cover, 4500 (XXG and below) |
| C4196A | Transfer Kit |
| RF5-2112 | Transfer Roller |
| RG5-3900 | Tray 3 |
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