MAGNAFLOW MagnaFlow Conv DF Audi S4 - 49135 Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49135. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this... MSRP: Was: Now: $856.00 Add to Cart
