Need a replacement catalytic converter for your 2012 Audi R8? MagnaFlow offers high-quality catalytic converters engineered for 2012 Audi R8 sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 2012 Audi R8 requirements and state vehicle registration to buy the best R8 catalytic converter online that fits your '12 R8 and meets your state’s emissions compliance.