Input or Output Shaft (Pinion) Nut Fits Front Axle: Jeep CJ (1976-1986) with Model 30 Front Axle. Jeep Wrangler (1987-2006) with Model 30 Front Axle. Jeep Cherokee (1984-2001) with Model 30 Front Axle. Jeep Grand Cherokee (1993-1998) with Model 30 Front Axle. Jeep SJ & J-Series (1974-1991) with Model 44 Front Axle. Fits Rear Axle: Jeep CJ (1986) with Model 44 Rear Axle. Jeep Wrangler (1987-2006) with Model 44 Rear Axle. Jeep Cherokee (1987-1990) with Model 44 Rear Axle. Jeep Comanche (1986-1993) with Model 44 Rear Axle. Fits Other: All Jeeps with Dana 300 Transfer Case.