This is a A-173133C91 Seal, PTO Drive Shaft Housing PN: 173133C91Main Description As Following : A-173133C91 Seal, PTO Drive Shaft Housing P.N: 173133C91 Inside Diameter: 2.562"Outside Diameter: 3.629"Width: .50" Crossed From: WN-173133C91 , , WN173133C91 , Found in Section & Models : Separator Area > Separator Area, Case-IH COMBINE: 1420, Case-IH COMBINE: 1440, Case-IH COMBINE: 1460, Case-IH COMBINE: 1470, Case-IH COMBINE: 1480, Case-IH COMBINE: 1620, Case-IH COMBINE: 1640, Case-IH COMBINE: 1644, Case-IH COMBINE: 1660, Case-IH COMBINE: 1666, Case-IH COMBINE: 1670, Case-IH COMBINE: 1680, 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: 2377, Case-IH COMBINE: 2388 Associated Items : New Also A-IH-P-ENG56CYL, A-IH-P-1420COMB, A-IH-S-ENGD155, A-IH-O-1440COMB, A-IH-P-ENG56CYL, A-IH-P-1440COMB, A-IH-S-ENG3400, A-IH-S-1440COMB, A-IH-O-1440COMB, A-IH-P-ENG56CYL, A-IH-P-1460COMB, A-IH-S-ENG3400, A-IH-S-1440COMB, A-IH-O-1440COMB, A-IH-P-ENG56CYL, A-IH-P-1480COMB, A-IH-S-ENG3400, A-IH-S-1440COMB, A-IH-P-1620COMB, A-IH-S-ENGD155 And : Inside Diameter: 2.562" Outside Diameter: 3.629"