This is a A-451590R91 Bearing PN: 451590R91Main Description As Following : A-451590R91 Bearing P.N: 451590R91 Inside Diameter: 1.181"Outside Diameter: 2.165"Replaces: T17389, A158333, P139605, U139605, 41613200Width: .510" Found in Section & Models : Clutch Parts > Clutch Parts, Case-IH TRACTOR: 430 (Pilot Bearing), Case-IH TRACTOR: 470 (Pilot Bearing), Case-IH TRACTOR: 530 (Pilot Bearing), Case-IH TRACTOR: 570 (Pilot Bearing), Transmission & Rear Axle > Trans Related Parts, Case-IH INDUSTRIAL/CONSTRUCTION: 2504 (Clutch Shaft), Case-IH INDUSTRIAL/CONSTRUCTION: 2544 (Clutch Shaft), Case-IH INDUSTRIAL/CONSTRUCTION: 2606 (Clutch Shaft), Case-IH INDUSTRIAL/CONSTRUCTION: 2656 (Clutch Shaft), Case-IH TRACTOR: 330 (Clutch Shaft), Case-IH TRACTOR: 340 (Clutch Shaft), Case-IH TRACTOR: 460 (Clutch Shaft), Case-IH TRACTOR: 504 (Clutch Shaft), Case-IH TRACTOR: 544 (Clutch Shaft), Case-IH TRACTOR: 606 (Clutch Shaft), Case-IH TRACTOR: 656 (Clutch Shaft), Case-IH TRACTOR: 664 (Clutch Shaft) Associated Items : New Also A-IH-O-2504-I, A-IH-O-3121, A-IH-P-3082, A-IH-P-5042504, A-SMIH201, A-IH-O-3121, A-IH-P-ENG-4DSL, A-IH-P-ENG14CYL, A-IH-S-544UTIL, A-IH-O-2606, A-IH-O-3121, A-IH-P-3082, A-IH-P-6062606, A-SMIH25, A-IH-P-6562656, A-IH-S-ENG460ETC, A-IH-S-ENG6CYLG, A-IH-S-HYDROTRN, A-IH-S-656CHASIS, A-FRM-ACCACO And : Inside Diameter: 1.181" Outside Diameter: 2.165" Replaces: T17389, A158333, P139605, U139605, 41613200 Width: .510"