Do I need any additional hardware to install this gasket?

The gasket itself is all you need. Your existing header bolts will reuse factory holes — just remove the old gasket, clean the sealing surface, and set the new one in place before reinstalling the header.

Can I reuse my original header bolts?

Yes. Factory bolts are reusable as long as they're not stripped or damaged. If you're pulling the header for any reason, a fresh gasket is the right move to eliminate exhaust leaks.

What if I notice exhaust smell after installation?

Check that all header bolts are evenly torqued and seated fully. Uneven pressure can cause the gasket to blow out. If smell persists after verification, the gasket may not be seating properly — double-check that the sealing surfaces are clean and flat.