Tie Rod, 13 grooves (STRAIGHT AXLE 48"-80" HU, RU). PART NO: A-AT20944. Dim A (1)A - 14.750" Dim B (2)B - .750". . MODELS: John Deere TRACTOR: 1020 (STRAIGHT AXLE 48"-80" HU, RU) John Deere TRACTOR: 1520 (STR AXLE 48"-80") John Deere TRACTOR: 2020 (STR AXLE 48"-80").