Dana 60 35 Spline 4.56 Up Selectable Locker For Use With 35 Spline Axle Shafts;For Use With 4.56 And Up Gears; Not For Use With C Clip Axles;Shifter Sold Separately; Includes Differential Cover DODGE FORD F-250 F-350 W250 PICKUP BASE CUSTOM SUPER CAB 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 4.9L (300) 4.9L LPG (300) 5.2L Magnum (318) 5.2L Small Block (318) 5.9L (359) 5.9L Magnum (360) 5.9L Magnum HD (360) 5.9L Small Block (360) 5L (302) 6.6L (400) 6.9L Diesel (420) 7.3L Turbocharged Diesel (445) 7.5L (460) DIESEL GAS LPG Ox Locker Ox Locker Dana 60 35 Spline 4.56 Up Selectable Locker - D60-456-35 D60-456-35 Differentials