This is a A-RE29776 Trans Disc: 14.75", solid PN: RE29776Main Description As Following : A-RE29776 Trans Disc: 14.75", solid P.N: RE29776 Spline Count: 21Spline Diameter: 1.375" Replaces: RE29776-RO JOHN DEERE , RE29776-R7B JOHN DEERE , 5378 JOHN DEERE , 5378B-7 JOHN DEERE , Crossed From: A-R43117 MISCELLANEOUS , SW00399 , , TP-RE29776R , , WN-RE29776 , , WNRE29776 , Found in Section & Models : Clutch Parts > Syncro/Quad Range, John Deere TRACTOR: 4520, John Deere TRACTOR: 4620, John Deere TRACTOR: 7020 Associated Items : New Also A-JD-O-OMR46935, A-SMJD203, A-JD-O-OMR48272, A-JD-P-PC1229, A-JD-S-TM1030, A-SMJD203 And : Spline Count: 21 Spline Diameter: 1.375"