Need a replacement catalytic converter for your 1981 Dodge B350? MagnaFlow offers high-quality catalytic converters engineered for 1981 Dodge B350 sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 1981 Dodge B350 requirements and state vehicle registration to buy the best B350 catalytic converter online that fits your '81 B350 and meets your state’s emissions compliance.