Sensor, Knock: Removal: 6.4L: Notes
WARNING: This page is about a different car, the 2016 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Two knock sensors (1) are used. Each sensor is bolted to the outside of the cylinder block below the exhaust manifold(s) (3).
NOTE:
Note the foam strip on bolt threads. This foam strip is used only to retain the bolts to the sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.