MagnaFlow Conv DF 04-06 Audi S4 4.2L

When it's time to replace the catalytic converter on your 2004-2009 Audi S4, you're looking for a part that fits right and keeps your check engine light off. This direct-fit catalytic converter from Magnaflow is built to meet Federal emissions requirements, ensuring your S4 stays compliant with EPA standards for OBDII Federally registered vehicles. It's designed to function just like the original equipment, so you can get back on the road with confidence.

Magnaflow constructs this converter using strong 16-gauge 409 stainless steel tubing for excellent corrosion resistance and a long service life. The tubing is mandrel-bent to maintain the original design and geometry, and the highly efficient, compact design allows for better thermal performance. A single laser fusion weld replicates the OE spun body design, significantly reducing the chance of leaks. You'll find that installation is straightforward, as it's designed as a direct replacement with no cutting or welding needed, and essential gaskets and hardware are included in the box to simplify the process.

This converter is designed to meet or exceed Federal emissions requirements. Please note that this part is not CARB approved and cannot be shipped to California.