OEM, aftermarket and used parts.
This is the argument nobody explains to you, and on an auto body repair it decides both the price and how the panel fits.
OEM parts are made by or for the manufacturer to original equipment specifications. They fit the way the panel that came off did, and the paint takes to them predictably.
Aftermarket parts are made by a third party to copy an OEM part. Quality ranges from good to poor. A bad one fights you on the gap, needs extra prep before paint, and can sit a millimeter proud where the eye catches it.
Used and recycled parts come off donor vehicles. On an older vehicle, a good used panel is often the sensible answer, particularly when the color already matches.
Carriers frequently specify aftermarket or used parts to control cost, and a shop on that carrier's program has agreed in advance to accept them. Extreme Hail & Collision has no such agreement. We tell you which parts an estimate calls for, what that means for fit and finish, and where we think the carrier is wrong. You decide, and if you want genuine parts where the carrier specified otherwise, we document the case.