Lexmark #83 factory (OEM) Color Print Cartridge 18L0042 X5100 Series, X6100 Series, Z55 Series, Z65 Series (x5150, x5100...) Genuine Lexmark cartridges generate optimum print quality using a 3 pl color drop size for perfect photos and graphics, two in-line nozzles for reliable coverage and a large print swath to provide superior print speed performance. This color cartridge should be used with the black counterpart cartridge, Lexmark #82 18L0032