This is a A-388396A1 Pulley, Feeder Jackshaft Drive PN: 388396A1Main Description As Following : A-388396A1 Pulley, Feeder Jackshaft Drive P.N: 388396A1 Outside Diameter: 13.230"Pulley Grooves: 4Replaces: 87665210Spline: 6 Crossed From: AV100262 VAPORMATIC , WN-388396A1 , , WN388396A1 , , 87665210 CASE-IH Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, Case-IH COMBINE: 2377, Case-IH COMBINE: 2388, Case-IH COMBINE: 2577, Case-IH COMBINE: 2588, Case-IH COMBINE: 5088, Case-IH COMBINE: 5130, Case-IH COMBINE: 5140, Case-IH COMBINE: 6088, Case-IH COMBINE: 6130, Case-IH COMBINE: 7088, Case-IH COMBINE: 7130 Associated Items : New Also This is An Aftermarket Product And : Outside Diameter: 13.230" Pulley Grooves: 4 Replaces: 87665210 Spline: 6