iamdub
Full Access Member
I just had two O2s seized on a 2013 Hyundai I did a downpipe on, for a Florida car with low miles I never expected them to be so stuck. I soaked multiple times with penetrating oil, hit with an air hammer to try to free up rust, torched until hot, and finally pulled the pipe put it in a vice and let big daddy M18 impact have a go until it rounded the threads smooth. The lesson is sometimes you just can't win, luckily all I had to do was get new sensors as I already had the new down pipe.
Bruh- Even when you're laying under it and looking at it from the other side, it's still "righty tighty, lefty loosey".