This is a replacement cartridge for the Hewlett Packard C8543X (43X) black laser toner cartridge which is manufactured by LD and is guaranteed to perform with your HP printer. It replaces the original HP C8543X toner cartridge. LD remanufactured replacement C8543X laser toner cartridges are specially engineered to meet the highest standards of quality and reliability you can expect from LD. Our toners have exceptional yields that meet or exceed the OEM (Original Equipment Manufacturer) page yield for the C8543X. Our remanufactured HP 43X contains up to 85% new parts including wiper blades, OPC drums, an electronic smart chip for accurate toner level readout and other internal components. While most competitors simply refill the toner cartridge and hope the drum and other key components last, we fully disassemble the toner cartridge and rebuild it to ensure the highest quality prints. High quality LD remanufactured C8543X toner cartridges are an economical and sensible alternative to expensive OEM C8543X (HP 43X) Hewlett Packard laser toner cartridges and supplies. The use of LD remanufactured replacement laser toner cartridges and supplies does not void your printers warranty. LD remanufactured laser cartridges are not remanufactured by HP. LD Products offers a 100% Quality Satisfaction Guarantee on our LD remanufactured C8543X black laser toner cartridges. For use in the following printers: LaserJet 9040dn, LaserJet 9040, LaserJet 9050dn, LaserJet 9050, LaserJet 9050mfp, LaserJet 9000n, LaserJet 9000hnf, LaserJet 9040n, LaserJet 9050n, LaserJet 9040mfp, LaserJet 9000. We are the exclusive reseller of LD Products brand of high quality printing supplies on Amazon.