Ford 8.8in. 31 Spline .750 Crpss Pin Lock Right Locker For Use With 31 Spline Axles;For Open Differential Only;For Use With .750in. Cross Shaft;No Need To Set Up Gears Reuses Existing Carrier;Arrgesive Traction FORD BRONCO F-150 BASE CUSTOM SUPER CAB XL 1983 1984 1985 1986 4.9L (300) 4.9L LPG (300) 5L (302) 6.9L Diesel (420) DIESEL GAS LPG Power Trax Power Trax Ford 8.8 Inch 31 Spline .750 Crpss Pin Lock Right Locker - 1821-LR 1821-LR Differentials