Need a replacement catalytic converter for your 2004 Buick Century? MagnaFlow offers high-quality catalytic converters engineered for 2004 Buick Century 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 Buick Century requirements and state vehicle registration to buy the best Century catalytic converter online that fits your '04 Century and meets your state’s emissions compliance.

Need a 2004 Buick Century replacement exhaust system? Shop all BRExhaust 2004 Buick Century Direct-Fit Replacement Exhaust Systems to find the best aftermarket kit to replace your 2004 Buick Century OEM exhaust.