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 : mag51452 Description : Conv DF 97-05 Audi A8 Quatt 4.2L DS Main Piping Diameter : 2.5 Catalytic Converter Format : Pre-Catalytic Converter and Main Catalytic Converter Catalytic Converter Oxygen Sensor Location : Post Converter Material : Stainless Series : OEM Grade Anticipated Ship Out Time : Approximately 1-2 Days CARB Compliant : N Catalytic Converter Air Tube Adapter : Not Air Tube Kit Adaptable Catalytic Converter Length : 9 Catalytic Converter Overall Length : 9 Catalytic Converter Configuration : Direct-Fit Exhaust Component Mount Type : Uses Factory Hangers Catalytic Converter Body Material : Stainless Catalytic Converter Substrate Material : Ceramic Catalytic Converter Inlet Diameter : 2.25 Catalytic Converter Outlet Diameter : 2.25 Catalytic Converter Width : 5.13 Exhaust Outlet Connection Type : Clamp-On Exhaust Pipe Material : Stainless Steel Recommended Use : Converter Warranty : 5 year/50,000 mile External, 2 years/25,000 miles Internal Exhaust Inlet Connection Type : Bolt-On 2899 : No 634 : Ceramic 601 : 2.25 1172 : 2.25 616 : 5.13 615 : 9 3145 : Specific California Air Board Approved : No CAT Converter Air Tube Adapter : Not Air Tube Kit Adaptable Converter Body Size : OEM Core Substrate Material : OEM Emission : Non-California (49-State) Inlet Size (in.) : 2.25 Main Piping Diameter (in.) : Stainless Steel Material : Stainless Steel Outlet Quantity : 1 Outlet Size (in.) : 2.25 Overall Length (in.) : 29.20 Oxygen Sensor Location : Post Converter Universal Or Specific Fit : Specific Body Length (in.) : 9 Body Width (in.) : 5.13 Inlet Connection Type : Bolt-On Inlet Inside Diameter (in.) : 2.25 Outlet Connection Type : Clamp-On Outlet Outside Diameter (in.) : 2.25 Title : DF Converter WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Body Length : 9.000 in. Outlet Outside Diameter : 2.25 Body Length : 9 California Air Resources Board Approved : No Body Width : 5.13 Catalytic Converter Overall Length : 29.2 Substrate Material : Ceramic Inlet Inside Diameter : 2.25 Inlet Inside Diameter : 2.250 in. 1997-2003 Audi A8 Quattro Base V8.4172cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2005 Audi A8 Quattro Base V8.4172cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2000-2005 Audi A8 Quattro L V8.4172cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit