Need a replacement catalytic converter for your 1996 Buick Roadmaster? MagnaFlow offers high-quality catalytic converters engineered for 1996 Buick Roadmaster sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 1996 Buick Roadmaster requirements and state vehicle registration to buy the best Roadmaster catalytic converter online that fits your '96 Roadmaster and meets your state’s emissions compliance.