I've had some concerns about mass produced coated headers. For the price of the coated BBK's I have considered getting uncoated ones and having a local shop do the coating so I know it was done right.
I've had uncoated headers on my Chevy last for about 4 years before starting to leak. What worries me about coated headers is they can rust out underneath the coating even quicker than uncoated ones, since water can get trapped inside.
Some food for thought eh?
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