MachI install question

[Big Nuttz]

I'm installing my socket kit and in the manual it says something about foam gasket. Was there supposed to be a foam gasket?
http://www.alcatrazclub.com/MACHI.jpg

[sandman001]

They come with either a foam gasket or heater.

I assume you're talking about the back insulation?

[Big Nuttz]

Yes it has the heater. Thanks