Do I need to prep or paint this gasket before installing?

No prep or painting needed. Aluminum gasket comes ready to bolt on. Install it dry—gaskets don't require sealant unless your header has surface damage.

What hardware do I need to secure this to my header?

Hardware is not included with this gasket. You'll use the bolts and fasteners that came with your header manifold. Torque specs vary by header design—check your specific header documentation.

Can I reuse this gasket if I remove my headers?

Aluminum gaskets are single-use. Once you break the bolt torque and remove them, the seal face gets compromised. Install fresh gaskets on reassembly to avoid exhaust leaks.