.010 Inch Crankshaft Main Bearing Set 72-86 CJ, 87-90 YJ, XJ, MJ, 71-86 SJ, J-Series Crown Automotive. 010 inch Crankshaft Main Bearing Set for Select 1972 1986 CJ 5, CJ 6, CJ 7, CJ 8, 1987 1990 YJ Wrangler, 1987 1990 XJ Cherokee, MJ Comanche, 1971 1986 SJ, J Series w 3. 8L, 4. 2L or 4. 0L Engines Features and Benefits: . 010 inch Undersized Direct Replacement For 3. 8L, 4. 0L, and 4. 2L Engines Use Existing Hardware Details: Material: Metal Color: Silver Hardware Included: Use Existing Hardware Application: 1971 1971 Jeep J Series J 3500 w 4. 2L