This is a A-AH218403 Sprocket, Feeder House Drive PN: AH218403Main Description As Following : A-AH218403 Sprocket, Feeder House Drive P.N: AH218403 Dim A (1): 26 & 38 Tooth Double SprocketDim B (2): 21 Internal SplinesReplaces: AH206133 Crossed From: AH206133 JOHN DEERE , AMAH218403 , , AV103750 VAPORMATIC Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, John Deere COMBINE: 9560STS (High Capacity), John Deere COMBINE: 9660 (High Capacity), John Deere COMBINE: 9660CTS (High Capacity), John Deere COMBINE: 9660STS (High Capacity), John Deere COMBINE: 9760STS (High Capacity), John Deere COMBINE: 9860STS (High Speed) Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 26 & 38 Tooth Double Sprocket Replaces: AH206133 Spline: 21 Internal