MagnaFlow 11-12 Mercedes-Benz C300 3.0L OEM Grade Direct Fit Catalytic Converter - 21-497 fits_2012-`Audi`A6 K&N's carbon fiber composites have

K&N's carbon fiber composites have an attractive cosmetic appeal

This truly is the ultimate exhaust set up for any ZR2 or AT4X

91010 and 91025

Retention Groove Filter Mounting Interface for Quick Install and Fewer Pieces

Not Compatible with G8X M3/ M4 with ACC (active cruise control)

MagnaFlow 11-12 Mercedes-Benz C300 3.0L OEM Grade Direct Fit Catalytic Converter - 21-497 fits_2012-`Audi`A6 K&N's carbon fiber composites haveKeep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 21 497. With features including free flowing mandrel bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state of the art metrology department uses the latest 3D scanning systems during research and development, so