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The MagnaFlow direct-fit catalytic converter for 2009–2011 Audi A6 Quattro 3.0L keeps emissions systems working and avoids check-engine alerts. The spun-body, OE-replicated design uses mandrel-bent tubing and corrosion-resistant stainless steel with a single laser fusion weld for leak reduction and thermal efficiency. CARB-compliant and California-grade, it ships with a flange gasket and matches OE part 4A0 253 057 EX for direct replacement.
MagnaFlow 09-11 Audi A6 Quattro 3.0L Direct Fit Converter
