123inkjets offers the best alternative to the OEM (genuine) Canon 1491A002AA (E-40) black laser toner cartridge. This laser cartridge is also a replacement for Canon OEM part #'s E16, E20, E31, F41-8801-750, F41-8801-750. Remanufactured with up to 60% new parts, our E-40 cartridges are refurbished to perfection for crisp, clear prints, every time. Laser toner you can rely on at a price you can afford.