MagnaFlow Direct-Fit Catalytic converters are designed for easy bolt-on installation for the Professional Installer. Each is designed to exact the original equipment specifications. While the majority of the Direct-Fit Catalytic converter products do not require welding; cutting or bending; limited applications may require additional welding for optimal installation. PartNumber : mag456030 Description : Conv DF 04 Pontiac GTO 5.7L Catalytic Converter Air Tube Adapter : Not Air Tube Kit Adaptable Catalytic Converter Format : Pre-Catalytic Converter and Main Catalytic Converter Main Piping Diameter : 2.5 Material : Stainless Series : California Anticipated Ship Out Time : Approximately 1-2 Days CARB Compliant : Y Catalytic Converter Oxygen Sensor Location : Pre Converter Catalytic Converter Body Material : Stainless Catalytic Converter Substrate Material : Ceramic Catalytic Converter Inlet Diameter : 2.5 Catalytic Converter Outlet Diameter : 2.5 Catalytic Converter Width : 4 Exhaust Pipe Material : Stainless Steel Catalytic Converter Length : 9.06 Catalytic Converter Overall Length : 9.06 Catalytic Converter Configuration : Direct-Fit Exhaust Component Mount Type : Uses Factory Hangers Exhaust Inlet Connection Type : Bolt-On Exhaust Outlet Connection Type : Bolt-On Recommended Use : Converter Warranty : 5 year/50,000 mile External/Internal Components : Band Clamp=1;Gasket=1 2899 : Yes 634 : Ceramic 601 : 2.5 1172 : 2.5 616 : 4 615 : 9.06 3145 : Specific 353 : Yes Body Length (in.) : 9.06 California Air Board Approved : Yes CAT Converter Air Tube Adapter : Not Air Tube Kit Adaptable Converter Body Size : OEM Core Substrate Material : Ceramic Emission : California Inlet Size (in.) : 2.5 Main Piping Diameter (in.) : Stainless Steel Material : Stainless Steel Outlet Size (in.) : 2.5 Overall Length (in.) : 50.5 Oxygen Sensor Location : Pre Converter Universal Or Specific Fit : Specific Body Width (in.) : 4 Gasket Or Seal Included : Yes Inlet Connection Type : Bolt-On Inlet Inside Diameter (in.) : 2.5 Outlet Connection Type : Bolt-On Outlet Outside Diameter (in.) : 2.5 California Proposition 65 : No Title : DF Converter WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Body Length : 9.060 in. Outlet Outside Diameter : 2.5 Body Width : 4 California Air Resources Board Approved : Yes Catalytic Converter Overall Length : 50.5 Body Length : 9.06 Components : Band Clamp=1 Inlet Inside Diameter : 2.5 Substrate Material : Ceramic Inlet Inside Diameter : 2.500 in. 2004 Pontiac GTO Base V8.-cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit