This is a A-SBA320400061 PTO Disc PN: SBA320400061Main Description As Following : A-SBA320400061 PTO Disc P.N: SBA320400061 Diameter: 8.870"Spline Count: 19Spline Diameter: 1.380" Crossed From: SW08013 , Found in Section & Models : Clutch Parts > Double Clutch, Ford / New Holland TRACTOR, COMPACT: 1900 Associated Items : New Also A-FO-O-1900, A-FO-S-13001500, A-SMFO44 And : Diameter: 8.870" Spline Count: 19 Spline Diameter: 1.380"