This is part of the Pentastar 3.6L V6 engine issues, the engines are defective with defective parts. Jeep knows about these issues and continues to put these engines in their vehicles leading to large cost repairs in newer vehicles. Not only do they know about the issues but the repairs call for replacing the parts with the same defective parts, possibly leading to the issue coming back down the road. Furthermore, the issues in most cases, come up just after the original warranty has ended, causing owners to replace engine parts that should never need to be replaced under normal wear and tear of a vehicle.