Dim A (1)13 Teeth Dim B (2)22 Spline Dim C (3)10.730" Long Associated Items : A-R43014Pinion gear, Used w/ R43016 shaft3 A-R48864Brake center plate; USED ON 4520,4620,4630,7020,75201MODELS : Transmission & Rear Axle > Diff Planetary Carriers and Related Parts John Deere TRACTOR: 4520 John Deere TRACTOR: 4620 John Deere TRACTOR: 4630 (SN < -12839) John Deere TRACTOR: 7020 (REAR AXLE ONLY) John Deere TRACTOR: 7520 (REAR AXLE ONLY).. more.