Need a replacement catalytic converter for your 1983 Mercury Cougar? MagnaFlow offers high-quality catalytic converters engineered for 1983 Mercury Cougar sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 1983 Mercury Cougar requirements and state vehicle registration to buy the best Cougar catalytic converter online that fits your '83 Cougar and meets your state’s emissions compliance.