Abstract: A device used to secure an automobile catalytic converter. The invention deters a person from tampering with or stealing a catalytic converter. The device consists of at least four overlapping, and adjustable plates comprising an adjustable frame structure that clamp around the catalytic converter. Tightening of fasteners keeps the frame structure securely in position around the catalytic converter, preventing easy access to the catalytic converter. The frame structure is then secured to the automobile itself with a looped cable, which prevents easy removal of the catalytic converter.