This is a A-1330054C1 Pulley Assy, Rotor Drive, Variable PN: 1330054C1Main Description As Following : A-1330054C1 Pulley Assy, Rotor Drive, Variable P.N: 1330054C1 Dim A (1): 17.500" ODDim B (2): 1.986" bore Crossed From: AV100209 VAPORMATIC , WN-1330054C1 , , WN1330054C1 , Found in Section & Models : Separator Area > Separator Area, Case-IH COMBINE: 1620 (P.I.N. JJC0022115 >), Case-IH COMBINE: 1640 (SN: < JJC0024223 & JJC0034705 >), Case-IH COMBINE: 1644, Case-IH COMBINE: 1660 (SN: JJC0026711 >), Case-IH COMBINE: 1666, Case-IH COMBINE: 1670 (SN: JJC0080540 >), Case-IH COMBINE: 1680 (P.I.N. JJC0028498 >), Case-IH COMBINE: 1688, Case-IH COMBINE: 2144, Case-IH COMBINE: 2166, Case-IH COMBINE: 2188, Case-IH COMBINE: 2344, Case-IH COMBINE: 2366, Case-IH COMBINE: 2388 (SN: < JJC0276540) Associated Items : New Also A-IH-P-1620COMB, A-IH-S-ENGD155, A-IH-S-1660COMB, A-IH-S-1660COMB, A-IH-S-1660COMB, A-IH-S-1660COMB, A-IH-S-1660COMB, A-IH-S-1660COMB And : Bushings not included. Dim A (1): 17.500" OD Dim B (2): 1.986" bore