This is a A-388771A1 Jackshaft, Feeder Drive PN: 388771A1Main Description As Following : A-388771A1 Jackshaft, Feeder Drive P.N: 388771A1 Length: 70.00"Spline: 6/6 Crossed From: AV100240 VAPORMATIC 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 > & HAJ0292001 >), Case-IH COMBINE: 2577 (SN HAJ0300001>), Case-IH COMBINE: 2588 (SN HAJ300001>) Associated Items : New Also This is An Aftermarket Product And : Spline: 6/6