[legenmetals]

I used CeraKote on my cast iron exhaust headers and my entire 304 stainless exhaust system minus the intermediate stainless section which we had electro polished. We heated the manifolds to 1200 degrees without discoloration. I also coated my intake manifold to match the cast iron headers. This is the material they use to coat weapons including rifle barrels, a very durable product. Time will tell.