Block Heater Element Installed
Make sure the threads in the engine block and block heater element are clean prior to installation.
Do not forget to install the aluminum sealing washer.
Apply a thin coat of Permatex 2 Form-A-Gasket (No. 2BR, UPS 80500) to the threads of the block heater element. This sealant is non-hardening and was recommended by the installation instructions of the Honda block heater element that I installed in my 1999 Honda CR-V when I bought it new.
The hex at the end of the block heater element takes a 24 mm socket.
Torque specification is: 75 - 85 Nm (55 -63 lbf.ft.)