Do I need to replace the header bolts when I install this gasket?

Not necessarily. If your existing bolts are in good condition and torque down without stripping, you can reuse them. If they're corroded, stripped, or won't hold torque, replace them with new hardware rated for exhaust applications.

Should I clean the header and manifold surfaces before installation?

Yes. Scrape off old gasket material and wipe both mating surfaces clean with a wire brush or gasket scraper. Any debris left behind can cause leaks. Let surfaces dry completely before pressing the new gasket in place.

What's your return policy if the gasket doesn't seal properly?

Contact our support team with photos of the install and any leak evidence. Returns are handled case-by-case. Most seal issues stem from improper surface prep or bolt torque — verify both before requesting a replacement.