: To be sold for reuse, a converter must be bench-tested and labeled to meet performance minimums, a process that is typically too expensive for individual salvage parts.
: In the U.S., the primary legitimate reason for a private party or business to buy a used converter is to recycle the precious metals (like platinum and rhodium).
: Some states, like California and Colorado , have much stricter rules that effectively ban the sale or installation of used/salvaged converters for vehicle use entirely. 🛠️ Installation and Practicality
Which are you located in? (Important for emissions compliance)
: Most professional shops will refuse to install a used catalytic converter because they risk heavy fines for "tampering" with emission systems.