[Sean Marconette]

Brent,
As to how long the coating lasts depends on your tune. My 18 yr old Jet Hot coated headers looked great, until a couple of years ago when I had a fuel pump lay down and leaned the motor out. Now they do not have the gloss that they used to have. So I would say the life of the header, unless you do something dumb!
Like others have stated, support the companies that support us. I think Jet Hot was the only game in town that long ago, as a known reputable company. I have not heard many good things about them the last few years with paying contingency.

Sean