This is a A-M804454 PTO Disc: organic PN: M804454Main Description As Following : A-M804454 PTO Disc: organic P.N: M804454 Outside Diameter: 8.843"Replaces: CH18376, M806764, AM876219, LVU801087Spline Count: 13Spline Diameter: .983" Replaces: CH13090 JOHN DEERE , LVU801087 JOHN DEERE , M804454-RO JOHN DEERE , M806764 JOHN DEERE , Crossed From: R13090 , , 1412-0017 , , 14120017 , Found in Section & Models : Clutch Parts > Double Clutch, John Deere TRACTOR, COMPACT: 1050, John Deere TRACTOR, COMPACT: 1070, John Deere TRACTOR, COMPACT: 4005, John Deere TRACTOR, COMPACT: 850 (S/N 16001>), John Deere TRACTOR, COMPACT: 870 (S/N 16001>), John Deere TRACTOR, COMPACT: 900HC, John Deere TRACTOR, COMPACT: 950 (S/N 20001>), John Deere TRACTOR, COMPACT: 970, John Deere TRACTOR, COMPACT: 990 Associated Items : New Also A-SMJD47, A-SMJD62, A-JD-O-OMR72588, A-SMJD47, A-SMJD62, A-JD-O-OMR72588, A-SMJD47, A-SMJD62 And : Outside Diameter: 8.843" Replaces: CH18376, M806764, AM876219, LVU801087 Spline Count: 13 Spline Diameter: .983"