This is a A-148951C1 Transmission (Tubular) Countershaft PN: 148951C1Main Description As Following : A-148951C1 Transmission (Tubular) Countershaft P.N: 148951C1 Early SN 66 & prior models requires spacer 71147C1, not available from A&I.Dim A (1): w/ LH ThreadReplaces: 380082R2 Replaces: 148951C2 IH , Crossed From: 380082R2 CASE-IH , 380082R3 CASE-IH , 71127C1 CASE-IH , 71784C1 CASE-IH Found in Section & Models : Transmission & Rear Axle > Trans Related Parts, Case-IH INDUSTRIAL/CONSTRUCTION: 21206, Case-IH INDUSTRIAL/CONSTRUCTION: 21256, Case-IH INDUSTRIAL/CONSTRUCTION: 21456, Case-IH INDUSTRIAL/CONSTRUCTION: 2706, Case-IH INDUSTRIAL/CONSTRUCTION: 2756, Case-IH INDUSTRIAL/CONSTRUCTION: 2806, Case-IH INDUSTRIAL/CONSTRUCTION: 2826, Case-IH INDUSTRIAL/CONSTRUCTION: 2856, Case-IH TRACTOR: 1086, Case-IH TRACTOR: 1206, Case-IH TRACTOR: 1256, Case-IH TRACTOR: 1456, Case-IH TRACTOR: 1486, Case-IH TRACTOR: 1586, Case-IH TRACTOR: 3088, Case-IH TRACTOR: 3288, Case-IH TRACTOR: 3688, Case-IH TRACTOR: 3788, Case-IH TRACTOR: 4100, Case-IH TRACTOR: 4156 Associated Items : A-148952C1 Also A-SMIH32, A-SMIH32, A-SMIH32, A-IH-O-706, A-IH-O-706EARLY, A-IH-P-706, A-IH-S-ENGD155, A-IH-S-ENG460ETC, A-IH-S-ENG6CYLG, A-SMIH32, A-IH-P-ENG6CYLG, A-IH-P-7562756, A-IH-S-ENGD155, A-IH-S-ENG6CYLG, A-IH-S-706756, A-SMIH32, A-IH-P-8062806, A-IH-S-806, A-SMIH32, A-IH-P-8262826 And : Early SN 66 & prior models requires spacer 71147C1, not available from A&I. Dim A (1): w/ LH Thread Replaces: 380082R2