WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
2.3L
Fig 1: Block Heater Replacement Components (2.3L) With Torque Specifications
Courtesy of FORD MOTOR CO.
3.0L
Fig 2: Block Heater Replacement Components (3.0L) With Torque Specifications