This is a A-H179093 Sheave, Reel Pump Drive, Standard PN: H179093Main Description As Following : A-H179093 Sheave, Reel Pump Drive; Standard P.N: H179093 Dim A (1): 9.925" O.D. Crossed From: AV104465 VAPORMATIC , WN-H179093 , , WNH179093 , Found in Section & Models : Headers/Platforms/Feeder House > Grain Head Parts, John Deere COMBINE: S550, John Deere COMBINE: 9450 (SN 690244>), John Deere COMBINE: 9550 (Standard Capacity), John Deere COMBINE: 9550SH (Standard Capacity), John Deere COMBINE: 9560 (Standard Capacity), John Deere COMBINE: 9560SH (Standard Capacity), John Deere COMBINE: 9560STS (Standard Capacity), John Deere COMBINE: 9570STS (Standard Capacity), John Deere COMBINE: 9650 (SN 690877> Standard Capacity), John Deere COMBINE: 9650CTS (SN 690505> Standard Capacity), John Deere COMBINE: 9650STS (SN 695501> Standard Capacity), John Deere COMBINE: 9660 (Standard Capacity), John Deere COMBINE: 9660CTS (Standard Capacity), John Deere COMBINE: 9660STS (Standard Capacity), John Deere COMBINE: 9670STS (Standard Capacity), John Deere COMBINE: 9750STS (SN 695501> Standard Capacity), John Deere COMBINE: 9760STS (Standard Capacity), John Deere COMBINE: 9770STS (Standard Capacity), John Deere COMBINE: 9860STS (Standard Capacity), Separator Area > Separator Sprockets and Sheaves, John Deere COMBINE: 9450 (SN 690244>) Associated Items : New Also This is An Aftermarket Product And : Outside Diameter: 9.925"