The MagnaFlow California Grade direct-fit catalytic converter 441091 is a CARB-compliant replacement built to meet OE fit and emissions requirements for 2001–2002 Audi S4 and Allroad Quattro applications. Stainless steel construction and mandrel-bent tubing retain OEM-like flow while a replicated spun-body design and precision welding reduce leak potential. Includes gaskets to help ensure a proper seal during direct-fit installation.
MagnaFlow Direct Fit Catalytic Converter 00-02 Audi S4 2.7L Driver Side