This is a A-82004600 Trans Disc: 13", organic, solid PN: 82004600Main Description As Following : A-82004600 Trans Disc: 13", organic, solid P.N: 82004600 Spline Count: 10Spline Diameter: 1.750" Replaces: 82004600-RO FORD , Crossed From: FE550DA , , SW00293 , , 1210 BMD MFG Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : Spline Count: 10 Spline Diameter: 1.750"