This is a A-71131901 Sprocket, Cylinder Drive PN: 71131901Main Description As Following : A-71131901 Sprocket, Cylinder Drive P.N: 71131901 Dim A (1): 18 toothDim B (2): 50 chainDim C (3): 3.919" OD, 1.250" ID Crossed From: AV101035 VAPORMATIC Found in Section & Models : Threshing Area > Threshing: Sprockets, Sheaves, Hubs, Gleaner COMBINE: E, Gleaner COMBINE: E3, Gleaner COMBINE: F, Gleaner COMBINE: F2, Gleaner COMBINE: F3, Gleaner COMBINE: G, Gleaner COMBINE: K, Gleaner COMBINE: L, Gleaner COMBINE: L2, Gleaner COMBINE: L3, Gleaner COMBINE: M, Gleaner COMBINE: M2, Gleaner COMBINE: M3 Associated Items : New Also A-AC-O-F3COMB, A-AC-O-CHCOMB, A-AC-O-KCOMB, A-AC-O-L2M2MID, A-AC-O-L2M2MID And : Dim A (1): 18 tooth Dim B (2): 50 chain Dim C (3): 3.919" OD, 1.250" ID