PART NO. A-AR55180. Spindle (RH/LH). ?é?á Requires 5/8" x 2 3/4" Steering Arm Bolt Dim A (1)?é?á?é?á A - 15.125" Dim B (2)?é?á?é?á B - 1.500" Dim C (3)?é?á?é?á C - 1.687" Dim D (4)?é?á?é?á D - 1.312". John Deere TRACTOR: 2510 (ROW CROP FRONT AXLE),John Deere TRACTOR: 2520 (SN 022001- > ROW CROP),John Deere TRACTOR: 3010 (ROW CROP FRONT AXLE),John Deere TRACTOR: 3020 (ROW CROP FRONT AXLE),John Deere TRACTOR: 4000 (ROW CROP FRONT AXLE),John Deere TRACTOR: 4010 (ROW CROP FRONT AXLE),John Deere TRACTOR: 4020 (ROW CROP FRONT AXLE),John Deere TRACTOR: 4320 (ROW CROP FRONT AXLE),Allis-Chalmers COTTON PICKER: 802,John Deere COTTON PICKER: 9900