In order to get the vtec solenoid off, I had to loosen up the thermostat housing, not the outlet but the piece it connects to. I think that I may have messed up the oring because it is leaking coolant all over. I am having trouble locating the specific O ring that I need.

 

The Honda part number is 19305-PT0-000. Aftermarket suppliers also make it.

 

Thats what I thought!

 

Actually it is 91312-P0A-000 >_<

 

Okay, I checked again, you're referring to the o-ring behind the housing.

My mistake.

 

After being impatient and having two hardwares order me 5 of the wrong gaskets, I have settled on making one out of thermostat gasket maker