Do I need fasteners or bolts to install this gasket?

The gasket itself comes as-is—fastener specs depend on your header bolt size and torque requirements. Refer to your vehicle's service manual for proper bolt specifications and torque values.

Can I reuse the old gasket, or does it need to be replaced?

Exhaust gaskets compress and deteriorate over time. Replacing it during a header or downpipe install ensures a fresh seal and prevents future leaks. A new gasket is the safest bet.

Will this gasket fit if I'm running a custom or aftermarket header?

This gasket is designed for the specific application listed. If you're using a non-OEM header or downpipe, verify the flange bolt pattern and spacing match before purchasing.