: Legal sellers must often provide a copy of the vehicle’s title or VIN from which the part was removed to prove it wasn't stolen. 🔍 How to Inspect a Used Converter

: States like California , New York , and Maine have even stricter rules. For example, in Maine, it is completely unlawful to sell or install any used or salvaged converter on any vehicle.

If you find a legally certified used unit, use these steps to ensure you aren't buying a "hollowed out" or dead part: 1. The "Shake" Test Top Catalytic Converter Brands - High Quality & Low Price

: It is generally a violation of federal law to install a used converter unless it has been professionally tested and labeled by a certified recycler.