Jeep Straight 6
Jeep Straight 6 . But that doesn’t mean it can’t be improved. This engine was created by amc before chrysler purchased them in 1987. 1) jeep 4.0l exhaust manifold cracks. 2006 Jeep Wrangler 75,791 Miles, 75,791 Miles Stone White from www.vehiclegeni.com 1) jeep 4.0l exhaust manifold cracks. Chrysler’s 4.0l straight six engine.