Standard Differential Case for Jeep C104, 72-86 CJs, 71-73 SJ, J-Series w/ D30 Crown AutomotiveStandard Differential Case for Jeep 1972 1986 CJ 5, CJ 6, CJ 7, CJ 8, 1972 1973 C104 Commando, 1971 1973 SJ, J Series w Dana 30 Front Axle w 2. 72, 3. 07, 3. 31, 3. 54 Ratio Features and Benefits: 12 Month Warranty 2. 72, 3. 07, 3. 31, 3. 54 Gear Ratios Direct Replacement For Models w Dana 30 Front Axle Standard Differential Details: Material: Steel Finish: Unpainted Location: Front Hardware Included: Use Existing Hardware Interchange: J8120366