Synchronizer Blocking Ring Set for 71-75 Jeep CJ, SJ J-Series, C104 w/ T15 Trans Crown Automotive3rd and 4th Gear Synchronizer Blocking Ring Set for 1971 1975 Jeep CJ 5 CJ 6, 1971 1975 SJ, J Series, 1972 1973 C104 Commando w T15 Transmission, Includes 2 Blocking Rings Features and Benefits: 12 Month Warranty Direct Replacement For Models w T15 Transmission Use Existing Hardware Details: Material: Bronze Color: Bronze Location: Front & Rear Hardware Included: Use Existing Hardware Application: 1971 1971 Jeep J Series J 3500 w T15 Transmission;