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