This is a A-1329717C1 Sprocket, Feeder Reverser Drive PN: 1329717C1Main Description As Following : A-1329717C1 Sprocket, Feeder Reverser Drive P.N: 1329717C1 Bore: 1.50"Replaces: 1321535C1Teeth: 20 Crossed From: AM1329717C1 , , AV100237 VAPORMATIC , WN-1329717C1 , , WN1329717C1 , , 118037 , , 1321535C1 CASE-IH Found in Section & Models : Headers/Platforms/Feeder House > Feeder House Parts, Case-IH COMBINE: 1420 (w/ or w/o Rock Trap), Case-IH COMBINE: 1440 (w/ or w/o Rock Trap), Case-IH COMBINE: 1460 (w/ or w/o Rock Trap), Case-IH COMBINE: 1480 (w/ or w/o Rock Trap), Case-IH COMBINE: 1620 (w/ or w/o Rock Trap), Case-IH COMBINE: 1640 (w/ or w/o Rock Trap), Case-IH COMBINE: 1644 (w/ or w/o Rock Trap), Case-IH COMBINE: 1660 (w/ or w/o Rock Trap), Case-IH COMBINE: 1666 (w/ or w/o Rock Trap), Case-IH COMBINE: 1680 (w/ or w/o Rock Trap), Case-IH COMBINE: 1688 (w/ or w/o Rock Trap), Case-IH COMBINE: 2144 (w/ or w/o Rock Trap), Case-IH COMBINE: 2166 (w/ or w/o Rock Trap), Case-IH COMBINE: 2188 (w/ or w/o Rock Trap), Case-IH COMBINE: 2344 (SN