The Lanier MPC6003 uses our compatible laser toner cartridges. Our compatible laser toner cartridges for the Lanier MPC6003 replace the OEM Lanier laser toner cartridges. Compatible replacement laser toner cartridges and supplies for your Lanier MPC6003 are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM (Original Equipment Manufacturer) standards. We offer a 100% Quality & Satisfaction Guarantee on Lanier MPC6003 laser toner cartridges and supplies.