[video]Refer to the YouTube video below, and you will have a better understanding of the working principles of the catalytic converter and tailpipe. Thanks to Automotive System [/video] Description YITAMOTOR universal catalytic converters, for 4" inlet/outlet diameter round body. As shown in the picture, the product does not contain other accessories, you need to weld it yourself, please pay attention. Fitment Universal Fit with 4" Inlet / Outlet Diameter Catalytic Converter Professional installation would be highly recommended Features 1. Maximum Efficiency for Exhaust Flow Internal honeycomb ceramic substrates have a porous structure to increase the reaction area and ensure sufficient catalysts (Pt, Rh, Pd) on the coating surface for a higher conversion rate. 2. Stainless steel shell, Durability Adopts heavy-duty T409 stainless steel shell that highly resists heat, rust, and corrosion for longer service life, with no worry about bending or melting even in extreme conditions. 3. EPA Federal Standard Certificated All YITAMOTOR catalytic converters are stamped with an exclusive EPA number on the shell. YITAMOTOR offers a 5-year or 50,000 miles limited warranty, for any manufacturer defect. 4. Universal Fit Perfectly matches with original vehicles with 4 inches of the outer diameter exhaust pipe. 5. Attention If your vehicle is registered in California, New York, Colorado & Maine, DO NOT BUY This item.If your vehicle MEETS California REQUIREMENT, BUT NOT REGISTER In California, New York, Colorado & Maine. This will work on your vehicle.Due to the increased emissions standards. This item is not certified for sale in California, New York, Colorado & Maine. Package Included 1 X 4" Universal Catalytic Converters [specification] Specifications Brand YITAMOTOR Certifications OBD I / OBD-II / Federal EPA / Non-CARB Material Stainless steel Restricted States California, New York, Colorado & Maine Converter Type Universal Fit Body Shape Round Inlet/Outlet Diameter 4" inside diameter Overall Length 11.4" Cell Count 400cell Engine Limit 5.9L Substrate Ceramic Placement on Vehicle Left, Right, Front, Rear Manufacturer Part Number F09O09062 Interchange Part Number 60011 Package included x 1 catalytic converter Warranty 5 years or 50,000 miles limited [/specification] California Residents: Prop 65 Warning WARNING: Cancer and Reproductive Harm Visit:www.p65warnings.ca.gov [des] - Internal Honeycomb Structure Design for Max Exhaust Flow- Improve the Efficiency, Clear the P0420/P0430 Code- Use Shockproof Packaging to Reduce Deformation or Damage- Not Legal for Sale in CA, NY, CO, and ME- 5-Year or 50,000-mile Limited Warranty[/des]