These printers use the 18C0033 cartridge:
Lexmark Color Jetprinter Z-810
Lexmark Color Jetprinter Z-812
Lexmark Color Jetprinter Z-815
Lexmark Color Jetprinter Z-816
Lexmark Color Jetprinter Z-818
Lexmark Home Copier Plus
Lexmark P 315
Lexmark P 450
Lexmark P 915
Lexmark P 4330
Lexmark P 4350
Lexmark P 6210
Lexmark P 6250
Lexmark P 6350
Lexmark P 8350
Lexmark Photo JetPrinter P-915
Lexmark Photo JetPrinter P-6250
Lexmark X 3330
Lexmark X 3350
Lexmark X 3530
Lexmark X 5210
Lexmark X 5250
Lexmark X 5250 All In One Printer
Lexmark X 5260
Lexmark X 5270
Lexmark X 5270 All In One Printer
Lexmark X 5450
Lexmark X 5470
Lexmark X 7170
Lexmark X 7170 All In One Printer
Lexmark X 7300
Lexmark X 7300 Series
Lexmark X 7350
Lexmark X 8350
Lexmark Z 810
Lexmark Z 812
Lexmark Z 815
Lexmark Z 816
Lexmark Z 818
Lexmark Z 818 ColorJet Printer