Ford 9in. 28 Or 31 Spline No Couplers Lock Right Locker For Use With 28 Or 31 SplineAxles;For Open Differential Only;Without Couplers Reuse Factory Side Gears;No Need To Set Up Gears Reuses Existing Carrier;Arrgesive Traction FORD BRONCO F-100 F-150 BASE CUSTOM ROADSTER SUPER CAB WAGON XL 1960 1961 1962 1963 1964 1966 1967 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 2.8L (2786cc) 3.3L (200) 3.7L (223) 3.8L (232) 3.9L (3933cc) 4.2L (255) 4.9L (300) 4.9L LPG (300) 5.8L Big Block FE (352) 5.9L Big Block FE (360) 5L (302) 6.4L Big Block FE (390) 6.6L (400) 6.9L Diesel (420) 7.5L (460) DIESEL GAS LPG Power Trax Power Trax Ford 9 Inch 28 Or 31 Spline No Couplers Lock Right Locker - 1810-LR 1810-LR Differentials