This is a A-AH222303 Sprocket, Drive, Auger Drive Slip Clutch PN: AH222303Main Description As Following : A-AH222303 Sprocket, Drive; Auger Drive Slip Clutch P.N: AH222303 Dim A (1): 10 ToothDim B (2): 3.674" O.D.Dim C (3): 1.756" I.D. Crossed From: AMAH222303 , , AV103760 VAPORMATIC Found in Section & Models : Headers/Platforms/Feeder House > Corn Head Parts, John Deere HEAD, CORN: 606, John Deere HEAD, CORN: 608, John Deere HEAD, CORN: 612 Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 10 Tooth Dim B (2): 3.674" O.D. Dim C (3): 1.756" I.D.