Replace the faulty or old stock catalytic converter with the all new aFe power direct - fit cat replacement. This cat replacement is constructed of mandrel - bent, 100 MIG welded stainless steel for strength and durability. This unit comes with a 49 - State federal approved cat and 38 thick flanges for a secure hassle - free installation. This cat replacement is designed as a one piece system that retains the factory O2 sensor and hanger locations for a direct bolt - on and go solution. Stainless Steel Construction This system is constructed of durable mandrel bent stainless steel tubing for maximum performance, corrosion resistance and strength, eliminating cracking. Factory Mounting Locations Utilizes factory mounting locations and factory style flanges making it a true bolt - on system. Catalytic Converter This kit comes with a 49 - State federal approved catalytic converter for a bolt - on and go installation.