is there anywhere online to purchase a good set or even oem exhaust manifold nuts for the 22re engine...the lower right exhaust manifold nut keeps coming loose on my yota...i've tried locktite with no luck....it has been taken off a few times so i'm figuring the nuts are probably about worn out...they aren't looking the best in the world either...
thanks

 

Those are one use nuts. Once you back em off....they're done. i had to go to the dealership. Sorry

 

Free fix. Take nut off, stand on end on hard surface. Whack with hammer just enough to visibly distort nut. Reinstall.