PN# RM1-2665-170, RM1-2665-160, RM1-2665-000 , or RC1-7606 * Fuser kits replace the heating element in Laser printers that fuses toner onto paper. These elements wear out from normal use * When the fuser is worn or damaged, you will get Error code 50, 50.1 or 50.2 (fuser error/ fuser failure). * For use in HP Color LaserJet 3000, 3000N, 3600, 3600N, 3600TN, 3800, 3800N