This is a A-AH129420 Flange PN: AH129420Main Description As Following : A-AH129420 Flange P.N: AH129420 USED ON: Straw Walker, Conveyor Augers, Sieve & Chaffer DriveBolt Circle: 3.937"Bore: 2.835" Stocked As: A-F3Z72-I Found in Section & Models : Separator Area > Separator Shafts, Gears, & Parts, John Deere COMBINE: CTS, John Deere COMBINE: CTS II, John Deere COMBINE: 9400, John Deere COMBINE: 9410, John Deere COMBINE: 9450, John Deere COMBINE: 9500, John Deere COMBINE: 9500SH, John Deere COMBINE: 9501, John Deere COMBINE: 9510, John Deere COMBINE: 9510SH, John Deere COMBINE: 9550, John Deere COMBINE: 9550SH, John Deere COMBINE: 9560, John Deere COMBINE: 9560SH, John Deere COMBINE: 9560STS, John Deere COMBINE: 9570STS, John Deere COMBINE: 9600, John Deere COMBINE: 9610, John Deere COMBINE: 9650, John Deere COMBINE: 9650CTS Associated Items : New Also This is An Aftermarket Product And : USED ON: Straw Walker, Conveyor Augers, Sieve & Chaffer Drive Bolt Circle: 3.937" Bore: 2.835"