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 : mag51644 Description : Conv DF 97-99 A4/Passat 1.8L Material : Stainless Series : OEM Grade Anticipated Ship Out Time : Approximately 1-2 Days CARB Compliant : N Catalytic Converter Body Material : Stainless Catalytic Converter Substrate Material : Ceramic Catalytic Converter Configuration : Direct-Fit Exhaust Pipe Material : Stainless Steel Recommended Use : Converter Warranty : 5 year/50,000 mile External, 2 years/25,000 miles Internal Components : Gasket=2 2899 : No 634 : Ceramic 3145 : Specific 353 : Yes Catalytic Converter Overall Length : 15.25 Catalytic Converter Format : Pre-Catalytic Converter and Main Catalytic Converter Exhaust Component Mount Type : Uses Factory Hangers 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.) : OE Main Piping Diameter (in.) : Stainless Steel Material : Stainless Steel Outlet Size (in.) : OE Overall Length (in.) : 15.25 Universal Or Specific Fit : Specific Gasket Or Seal Included : Yes Inlet Inside Diameter (in.) : OE Outlet Outside Diameter (in.) : OE Title : DF Converter WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Catalytic Converter Air Tube Adapter : Not Air Tube Kit Adaptable Outlet Outside Diameter : OE Substrate Material : Ceramic California Air Resources Board Approved : No Inlet Inside Diameter : OEM 1997-2005 Audi A4 Base L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2003-2006 Audi A4 Cabriolet L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1999-2005 Audi A4 Quattro Avant L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1997-2005 Audi A4 Quattro Base L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2004 Audi A4 Quattro Cabriolet L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2003-2005 Volkswagen Passat GL L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1998-2005 Volkswagen Passat GLS L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 2004-2005 Volkswagen Passat GLS 4 Motion L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit 1999-2003 Volkswagen Passat GLX L4.1781cc Exhaust, Mufflers & Tips::Catalytic Converter Direct Fit