WARNING: This page is about a different car, the 2016 Dodge Charger and 2015 Dodge Charger. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: PIA Bolt, Engine Block Heater Element & PIA Bolt
Courtesy of CHRYSLER GROUP, LLC
The 5.7L engine block heater (1) is mounted in the cylinder block, near the left rear corner. The engine block heater (1) is a dry cylinder type design and is powered by 110 volt AC.