Do I need to change bolt and seal for Perrin crank pulley install

[bigfatcat]

Originally Posted by DarkPira7e

It's worth the pocket change to just replace the bolt. No sense in taking a risk when it's 100% avoidable

Thanks for the helpful replies. I will reuse the bolt and replace the o-ring. The reason I ask is not saving the $$ on buying a new bolt. It's just that if I get a new one I would have to torque it a lot more than if re-used the standard one(according to guy in the YouTube video I posted), and I'm nervous torquing it so much so rather not do that if I can avoid it.