Like changing the oil in your car prolongs the life of your engine, proper maintenance improves print quality and prolongs the life of a printer. DPI printer maintenance kits keep your printer in optimal condition. These kits provide all of the parts necessary to perform do-it-yourself maintenance on your printer to help extend your printer"s life. All of our maintenance kits offer market-leading quality and OEM performance, at a significant cost savings. The entire DPI line is manufactured in state-of-the art facilities and supported by a best-in-class warranty and technical support program. This maintenance kit is compatible with HP LaserJet 4100, 4100N, 4100DTN, 4100T, 4100TN, 4100MFP, 4101MFP and includes 1 Fuser, 5 Separation Roller, 1 Tray 1 Pickup Roller, 1 Transfer Roller. It has an expected yield of up to 200,000 pages dependent upon print environment and media used.