The Epson L800 is a popular high-volume ink tank printer (part of Epson’s “L” series, also known as EcoTank in some regions). Unlike traditional cartridge-based printers, the L800 uses a refillable ink tank system. This means there is no “cartridge code” in the usual sense. Instead, you need the correct ink bottle codes for refilling. Official Epson Ink Bottle Codes for L800 The Epson L800 uses 6 individual ink bottles (dye-based ink). Below are the official Epson part numbers per color: