O2 Sensor Nuts Rusted & Need Help!

Need help with removing the cover to the O2 sensor (Sensor 2 Bank 1). The nuts have rusted and are now gone. Any ideas with getting this thing off?

 

Penetrating oil [like Kroil] heat, and a pipe wrench.

 

Welcome to TacomaWorld
Sawzall or Dremel with cutting wheel.
Covers aren't necessary.
Use Vice grips to remove the 8m x 1.25 studs. Clean holes with 8m tap.
Auto parts stores have the studs and nut.
Use ONLY DENSO Sensors.
https://densoautoparts.com/find-my-part.aspx

 

I ordered this from Amazon and it got me there. I used a 90 degree bit holder on my impact to get it wedged on and then a ratchet to break it open.

 

Thank you. I’ll check it out. Appreciate the reply.