Do I need to prep the exhaust pipes before installing this clamp?

Clean any loose rust or debris from the pipe surface where the clamp will sit. Smooth surfaces ensure even pressure and a leak-free seal. You don't need to sand or paint — just wipe it down.

What hardware do I need to tighten this clamp?

The clamp itself comes as one piece. You'll need a socket wrench or adjustable wrench to tighten the bolt(s) that secure the lap joint. Exact bolt size depends on the clamp design — measure before you buy.

Can I use this to permanently join two exhaust pipes together?

Yes, lap joint clamps are designed for permanent installations. The overlap gives you solid contact area for a tight, leak-resistant connection that holds up to vibration and thermal cycling.