Order from a Lexmark parts center. Features Kit installation is recommended every 480,000 pages. Includes: empty developer housing (4 each), carrier beads (1 each for cyan, magenta, yellow and black), transfer belt, transfer belt cleaner assembly, 2nd transfer roll assembly, suction filter, feed rolls (4 each), pick rolls (4 each) and separation rolls (4 each)Compatible Printers: Lexmark Optra C 920 Series, Lexmark C 920 TN, Lexmark Optra C 920 TN, Lexmark Optra C 920, Lexmark Optra C 920 DTN, Lexmark C 920 N, Lexmark Optra C 920 N, Lexmark C 920 DN, Lexmark Optra C 920 DN, Lexmark C 920, Lexmark C 920 DTN