Ford 8.8in. 31 Spline Air Selectable Locker For Use With 31 Spline Axle Shafts;For Use With 2.73 And Up Gears;Requires Use of External Source Not Included; Includes Differential Cover With Integral Air Cylinder FORD BRONCO II RANGER BASE S SUPER 1983 1984 1985 1986 2.2 Diesel (134) 2.3L (140) 2.3L Turbocharged Diesel (140) 2.8L 2.8L (2786cc) 2.9L (177) 2L (1989cc) DIESEL GAS Ox Locker Ox Locker Ford 8.8 Inch 31 Spline Air Selectable Locker - F88-273-31-AIR F88-273-31-AIR Differentials