This is a A-398526A1 Hub, Feeder Jackshaft Drive PN: 398526A1Main Description As Following : A-398526A1 Hub, Feeder Jackshaft Drive P.N: 398526A1 Dim A (1): 1.508" hexDim B (2): 2 keyways Replaces: 1305154C2 IH COMBINE , Crossed From: AV100196 VAPORMATIC , WN-398526A1 , , WN398526A1 , Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, Case-IH COMBINE: 2344 (SN: JJC0174400 >), Case-IH COMBINE: 2366 (SN: JJC0254000 >), Case-IH COMBINE: 2377 (SN: HAJ0292001 >), Case-IH COMBINE: 2388 (SN: JJC0268800-JJC0276540 & HAJ0292001 >), Case-IH COMBINE: 2577 (SN HAJ0300001>), Case-IH COMBINE: 2588 (SN HAJ300001>), Headers/Platforms/Feeder House > Grain Handling Shafts, Sprockets, Pulley, Case-IH COMBINE: 1420, Case-IH COMBINE: 1440 (SN 10001>), Case-IH COMBINE: 1460 (SN 12001>), Case-IH COMBINE: 1470, Case-IH COMBINE: 1480 (SN 14001>), Case-IH COMBINE: 1482, Case-IH COMBINE: 1620, Case-IH COMBINE: 1640, Case-IH COMBINE: 1644, Case-IH COMBINE: 1660, Case-IH COMBINE: 1666, Case-IH COMBINE: 1670, Case-IH COMBINE: 1680, Case-IH COMBINE: 1688 Associated Items : New Also A-IH-P-ENG56CYL, A-IH-P-1420COMB, A-IH-S-ENGD155, A-IH-O-1440COMB, A-IH-P-ENG56CYL, A-IH-P-1440COMB, A-IH-S-ENG3400, A-IH-S-1440COMB, A-IH-O-1440COMB, A-IH-P-ENG56CYL, A-IH-P-1460COMB, A-IH-S-ENG3400, A-IH-S-1440COMB, A-IH-O-1440COMB, A-IH-P-ENG56CYL, A-IH-P-1480COMB, A-IH-S-ENG3400, A-IH-S-1440COMB, A-IH-S-1482COMB, A-IH-P-1620COMB And : Bore: 1.508" Bore Type: Hex Keyway: 2