AdvertisementHow to protect your car from catalytic converter theft, and what to do if it happensUpdated October 19, 2023Becky SullivanAyana ArchiefacebookEmailA brand new catalytic converter sits on the floor at Johnny Franklin's Muffler in San Rafael, Calif. No state has seen more catalytic converter thefts than California, according to State Farm. (Getty Images)This article was originally published on November 04, 2022.