Zr2 fenders on non zr2???.
 

Will a Z fender bolt on to a regular blazer?

Not directly, no. Here's a DIY article though.
https://blazerforum.com/forum/articl...?highlight=zr2

I'm not talking about the flares I have those I'm taking about the fender

I'm not sure so please don't take my word for fact but I don't see why they wouldn't fit

Oh, my bad. Then I agree with the above, I can't see why they wouldn't.

Ok thanks I have a bad fender and am puting passenger side fender on with flares all the way around

you might have some issues getting the inner fenders to line up perfectly but otherwise they will bolt right up.