This is a A-67596C91 Shaft, IPTO Drive PN: 67596C91Main Description As Following : A-67596C91 Shaft, IPTO Drive P.N: 67596C91 Check degree of angle (25???) on gear teeth before ordering.Spline: 17 , 1.750" Dia.Teeth: 26 Replaces: 67596C1 IH , 67596C91-R IH , Crossed From: AM67596C1 , , WN-67596C91 , , WN67596C91 , , 109651 , , 1712-9001 , , 67596N BMD MFG Found in Section & Models : PTO Parts > PTO and Related Parts, Case-IH TRACTOR: 1066, Case-IH TRACTOR: 1466, Case-IH TRACTOR: 1468, Case-IH TRACTOR: 1486, Case-IH TRACTOR: 480, Case-IH TRACTOR: 766 (Gas SN 10935> / Diesel SN 9000>), Case-IH TRACTOR: 966, Case-IH TRACTOR: 995 Associated Items : A-380101R2, A-70227C91 Also A-IH-O-BATTIGN, A-IH-O-1066, A-IH-O-766966, A-IH-P-ENG56CYL, A-IH-P-766966, A-IH-S-AIRHEAT, A-IH-S-ENG3400, A-IH-S-TOOLSLATE, A-IH-S-TUNELATE, A-IH-S-766966, A-MW-P-TENDER, A-SMIH203, A-IH-O-BATTIGN, A-IH-O-766966, A-IH-P-ENG56CYL, A-IH-P-766966, A-IH-S-AIRHEAT, A-IH-S-ENG3400, A-IH-S-TOOLSLATE, A-IH-S-TUNELATE And : Spline: 17 , 1.750" Dia. Teeth: 26