ATR Header Material?

[PCS74]

I need to know what grade stainless ATR used for their headers. No guesses please.

Thanks,

Chris Skarzenski

 

[bison]

If its the same as their exhausts its 304 stainless.

 

[ijames]

They always listed their tubular headers as 304 stainless steel tubing, and neglected to mention the mild steel flanges at the heads. My set certainly acted like that with the tubes turning blue and then gradually black and the flanges rusting a little. If they had a "stock replacement" header I don't know what is was made from.

 

[PCS74]

Edit,

Thanks Carl