Will this gasket seal properly between my header and manifold without additional sealer?

Aluminum gaskets are designed to seal under clamp pressure alone. You don't need additional gasket maker, but some builders prefer a thin bead for extra insurance—your choice.

What torque spec should I use when installing?

Refer to your vehicle's service manual for the correct fastener torque. Header bolts vary, and overtightening can warp the gasket.

Can I reuse this gasket if I remove the header later?

Aluminum gaskets compress under heat and pressure, so they're best treated as single-use. Grab a fresh one if you pull the header again—worth the cost to avoid leaks.