Kentrol rear differential cover (part 304m20) fits Jeep CJ 76-86 12bolt rear, cherekee 81-84, J10-12 wagoneer 81-84. Kentrol front differential cover (part 304m30) fits jeep CJ6 56-58, CJ5 54-58, CJ3 53-57, CJ7 41-52 & 59-86. Brand new and never...