There's lots of TTY bolts on our trucks that "should" be replaced, but 99% of the time they're not. S/C bolts are one of them too lol. Just check them again after a few miles and make sure they're still tight. I've never heard of anyone have a u-bolt fail on one of these over all the years on the forums. It's a good idea to check them anyway since they can loosen over time even if they are new bolts.