Need a replacement catalytic converter for your 1977 Buick Electra? MagnaFlow offers high-quality catalytic converters engineered for 1977 Buick Electra sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 1977 Buick Electra requirements and state vehicle registration to buy the best Electra catalytic converter online that fits your '77 Electra and meets your state’s emissions compliance.