This is a A-381490R1 Disc, PTO PN: 381490R1Main Description As Following : A-381490R1 Disc, PTO P.N: 381490R1 Dim A (1): PTO DiscInside Diameter: 3.730"Internal Splines: 51Outside Diameter: 5.300"Spline Count: 51Spline Diameter: 3.730" Inside, 5.300" Outside Replaces: 381490 IH , Crossed From: WN-381490R4 , , WN381490R4 , , 111357 , , 1277392C1 CASE-IH , 1712-4422 , , 17124422 , , 1997688C1 CASE-IH , 381490 , , 381490R3 CASE-IH , 381490R4 , Found in Section & Models : PTO Parts > PTO and Related Parts, Case-IH INDUSTRIAL/CONSTRUCTION: 21026 (w/ single & dual speed PTO assy) (Qty: 1, Case-IH INDUSTRIAL/CONSTRUCTION: 21206 (w/ single & dual speed PTO assy) (Qty: 1, Case-IH INDUSTRIAL/CONSTRUCTION: 21256 (w/ single & dual speed PTO assy) (Qty: 1, Case-IH INDUSTRIAL/CONSTRUCTION: 21456 (w/ single & dual speed PTO assy) (Qty: 1, Case-IH INDUSTRIAL/CONSTRUCTION: 2544 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH INDUSTRIAL/CONSTRUCTION: 2656 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH INDUSTRIAL/CONSTRUCTION: 2706 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH INDUSTRIAL/CONSTRUCTION: 2756 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH INDUSTRIAL/CONSTRUCTION: 2806 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH INDUSTRIAL/CONSTRUCTION: 2826 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH INDUSTRIAL/CONSTRUCTION: 2856 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: HYDRO 100 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: HYDRO 186 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: HYDRO 70 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: HYDRO 86 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: 1026 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: 1066 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: 1086 (w/ single & dual speed PTO assy) (Qty: 1), Case-IH TRACTOR: 120, Case-IH TRACTOR: 1206 (w/ single & dual speed PTO assy) (Qty: 1) Associated Items : New Also A-SMIH32, A-SMIH32, A-SMIH32, A-IH-O-3121, A-IH-P-ENG-4DSL, A-IH-P-ENG14CYL, A-IH-S-544UTIL, A-IH-P-6562656, A-IH-S-ENG460ETC, A-IH-S-ENG6CYLG, A-IH-S-HYDROTRN, A-IH-S-656CHASIS, 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 And : Dim A (1): PTO Disc Inside Diameter: 3.730" Internal Splines: 51 Outside Diameter: 5.300" Spline Count: 51 Spline Diameter: 3.730" Inside, 5.300" Outside