This is a A-307988A1 Concave, Front Extension (Small Grain) PN: 307988A1Main Description As Following : A-307988A1 Concave, Front Extension (Small Grain) P.N: 307988A1 Quantity: 1 UsedReplaces: 1318557C1Type: Small Grain Replaces: CIHCE1680F *** NO CLASS *** , 1318557C1 IH COMBINE , Crossed From: AV100331 VAPORMATIC Found in Section & Models : Threshing Area > Concaves, Case-IH COMBINE: 1680 (Used With Front Concave A-1309204C3), Case-IH COMBINE: 1682 (Used With Front Concave A-1309204C3), Case-IH COMBINE: 1688 (Used With Front Concave A-1309204C3), Case-IH COMBINE: 2188 (Used With Front Concave A-1309204C3), Case-IH COMBINE: 2388 (Used With Front Concave A-1309204C3) Associated Items : New Also A-IH-S-1660COMB, A-IH-S-1660COMB And : Quantity: 1 Used Replaces: 1318557C1 Type: Small Grain