This is a A-H166216 Gear, Input w/ Lube Slots, Reverser Gearbox PN: H166216Main Description As Following : A-H166216 Gear, Input w/ Lube Slots, Reverser Gearbox P.N: H166216 Dim A (1): 5.91" longDim B (2): 21 teethReplaces: H105909, H161566 Replaces: H105909 JOHN DEERE , H161566 JOHN DEERE , Crossed From: AMH166216 , , CV104439 VAPORMATIC , WN-H166216 , , WNH166216 , , 109641 , , 300-D166216 , , 300D166216 , Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, John Deere COMBINE: CTS (Use w/ AH134864, AH145314, AH156053 or AH156049), John Deere COMBINE: CTS II, John Deere COMBINE: CTS II (Use w/ AH156049), John Deere COMBINE: 6620 (SN610731>), John Deere COMBINE: 6622 (SN 507051>), John Deere COMBINE: 7720 (SN 612194>), John Deere COMBINE: 7722, John Deere COMBINE: 8820 (SN 464351>), John Deere COMBINE: 9400 (Use w/ AH134864, AH145314, AH156053 or AH156049), John Deere COMBINE: 9410 (Use w/ AH156053 or AH156049), John Deere COMBINE: 9450 (SN <690217), John Deere COMBINE: 9500 (Use w/ AH134864, AH145314, AH140341, AH156053, AH15604, John Deere COMBINE: 9500SH (Use w/ AH134864, AH145314, AH140341, AH156053, AH156, John Deere COMBINE: 9501, John Deere COMBINE: 9510 (Use w/ AH156053, AH156054 or AH156049), John Deere COMBINE: 9510SH (Use w/ AH156053, AH156054 or AH156049), John Deere COMBINE: 9550 (SN <690799), John Deere COMBINE: 9550SH (SN <690719), John Deere COMBINE: 9600 (Use w/ AH134863, AH145315, AH156052 or AH156050), John Deere COMBINE: 9610 (Use w/ AH156050 OR AH156052) Associated Items : A-JD8819 Also A-JD-O-OMH111330, A-JD-O-OMH120048, A-JD-O-OMH111330, A-JD-O-OMH120048, A-JD-O-OMH111330, A-JD-O-OMH120048 And : Length: 5.91" Replaces: H105909, H161566 Teeth: 21