This is a A-1640FL Front Lip, Concave, Bolt On PN: 1640FLMain Description As Following : A-1640FL Front Lip, Concave; Bolt On P.N: 1640FL Bolt On Front Concave Lip For All Narrow And Wide Spaced Concaves. Replaces: CIHC1640FL *** NO CLASS *** , Crossed From: AV101101 VAPORMATIC 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 : Bolt On Front Concave Lip For All Narrow And Wide Spaced Concaves.