When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I suggest you don't wrap your manifold with heat wrap as it causes rusting.
Also, it doesn't make that much of a difference in engine bay temps.
I would say the only reason for it would be in emerald case, if something
hot is burning something.
i've read in places that header wrap can cause headers to fail prematurely. with as hot as our headers get, i'd be hesitant to wrap them, as they'll probably crack.