129R77160KCIdling gear for HP LaserJet 9040 9050 Series
129U77010KC100-tooth slide gear - Located on the 2500-sheet multifunction finisher and the 3000-sheet stapler/stacker
129U77041KC18-tooth coupling gear - Located on the 2500-sheet multifunction finisher and the 3000-sheet stapler/stacker
12AA77080KC27-tooth gear - Located on the toner supply unit
12AJ77031KC42-tooth gear - Where by-pass feed driving belt drives in to
12QR77010KCStaple driving gear - Located on the 2500-sheet multifunction finisher and the 3000-sheet stapler/stacker
12QR77050KCUp-down gear/b for HP LaserJet 9040 9050 Series
12QR77060KCUp-down gear/c for HP LaserJet 9040 9050 Series
12QR77110KC100/20-tooth paper exit gear - Located on the 2500-sheet multifunction finisher and the 3000-sheet stapler/stacker
12QR77210KC102-tooth belt detecting gear - Located on the 2500-sheet multifunction finisher and the 3000-sheet stapler/stacker
13GG77010KC92-tooth sensor detecting gear - Large gear that mount on the driving up-down plate - For the 4000-sheet high capacity input (A4/letter) tray
13GG77020KC22-tooth sensor driving gear - Mounts on the driving up-down plate for the 4000-sheet high capacity input (A4/letter) tray
13GG77030KCMotor driving gear - Gera that mounts on the transfer paper supply motor - For the 4000-sheet high capacity input (A4/letter) tray
13LS77030KCDrive gear for HP LaserJet 9040 9050 Series