These printers use the 113R00657 cartridge:
Click On a Printer to View it's Cartridges
          Xerox-Tektronix Phaser 4500
          Xerox-Tektronix Phaser 4500 B
          Xerox-Tektronix Phaser 4500 DT
          Xerox-Tektronix Phaser 4500 DX
          Xerox-Tektronix Phaser 4500 N