This is a A-AT141683 Trans Disc: 11", spring loaded PN: AT141683Main Description As Following : A-AT141683 Trans Disc: 11", spring loaded P.N: AT141683 Replaces: AT21500Spline Count: 10Spline Diameter: 1 250" Replaces: AT21500 JOHN DEERE Found in Section & Models : Clutch Parts > Single Clutch, John Deere EXCAVATOR: 450 (w/ Hi-Lo Reverse Trans) Associated Items : New Also A-JD-O-OMT32592, A-JD-P-PC922, A-JD-S-SM2064 And : Replaces: AT21500 Spline Count: 10 Spline Diameter: 1 250"