Yes, the Epson 664 ink series includes magenta ink. This ink series is commonly used in Epson EcoTank printers, and the magenta ink bottle is specifically designed for color printing alongside cyan and yellow. If you need to replace the magenta ink in your printer, look for the Epson 664 Magenta ink bottle. It's always a good idea to ensure compatibility by checking your printer's manual or the Epson website for the exact ink specifications for your printer model. This helps maintain print quality and prevents potential issues with your printer.