This is a A-430963A1 Concave, Middle/Rear (Small Grain) PN: 430963A1Main Description As Following : A-430963A1 Concave, Middle/Rear (Small Grain) P.N: 430963A1 Quantity: 2 UsedType: Small Grain Replaces: CIHC1640MR *** NO CLASS *** , Crossed From: AM430963A1 , , AV102021 VAPORMATIC , HC430963A1 , , WN-430962A1 , , 300-C430963 , , 300C430963 , Found in Section & Models : Threshing Area > Concaves, Case-IH COMBINE: 1640, Case-IH COMBINE: 1644, Case-IH COMBINE: 1660, Case-IH COMBINE: 1666, Case-IH COMBINE: 1670, Case-IH COMBINE: 2144, Case-IH COMBINE: 2166, Case-IH COMBINE: 2366 Associated Items : New Also A-IH-S-1660COMB, A-IH-S-1660COMB, A-IH-S-1660COMB And : Quantity: 2 Used Type: Small Grain