This is a compatible replacement for the Okidata 42102801 (Type C9) laser drum unit, guaranteed to perform with your Okidata laser printer. It delivers a yield of up to 25,000 pages, ensuring high-quality printing results. The drum unit fits into the Type C9 drum housing, allowing for easy replacement without needing to change the entire drum housing. The use of compatible replacements does not void your printer's warranty. We offer a 100% Quality Satisfaction Guarantee on our compatible alternatives to the 42102801 (Type C9) laser drum units.