Facebook Marketplace makes it incredibly easy to list a used part. That same ease is what makes it the largest source of used-parts fraud in North America.
No verification, no recourse
Anyone with a Facebook account can list anything. Many of those accounts are stolen, freshly created, or operated from another country entirely. When the scammer disappears, Facebook will not get your money back. There is no payment protection, no dispute team, no insurance.
Payment apps that can't help you
Almost every Facebook parts sale settles on Zelle, Cash App, or Venmo. Those apps are explicit: they do not protect purchases of goods between strangers. Once you hit send, the money is gone. That is not a bug in the platform, that is the platform.
Shipping is your problem
Facebook Marketplace has no shipping integration for heavy parts. You are coordinating freight with a stranger over Messenger, hoping they actually drop it at the terminal, hoping the BOL matches, hoping the part inside the crate is the part in the photo.
What Parts Match adds back
Identity verification on both sides. Payment protection until delivery. Real shipping integration through ShipStation. A dispute team that can actually reach the seller. The 'inconvenience' of these protections is exactly what makes them protections.