Need a replacement catalytic converter for your 2012 BMW 335is? MagnaFlow offers high-quality catalytic converters engineered for 2012 BMW 335is 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 BMW 335is requirements and state vehicle registration to buy the best 335is catalytic converter online that fits your '12 335is and meets your state’s emissions compliance.