Part numbers:
Xerox Phaser 8400 - 650-4303-00
Xerox Phaser 8500 - 046K00510, 046K00530, 650-4318-00
Xerox Phaser 8560 - 017K04540

Replacement recommendations:
If your Xerox Phaser 8400, 8500, 8550, or 8560 displays a 37,002, 37,004, or 37,007 error, you will likely need to replace the printhead. You should also consider replacing the printhead if you experience light streaks in your prints that cannot be cleaned out.

Compatible models:
Phaser 8400N
Phaser 8500N
Phaser 8550N
Phaser 8560N