Need a replacement catalytic converter for your 2004 Volvo S80? MagnaFlow offers high-quality catalytic converters engineered for 2004 Volvo S80 sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 2004 Volvo S80 requirements and state vehicle registration to buy the best S80 catalytic converter online that fits your '04 S80 and meets your state’s emissions compliance.