Need a replacement catalytic converter for your 1990 Geo Storm? MagnaFlow offers high-quality catalytic converters engineered for 1990 Geo Storm sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 1990 Geo Storm requirements and state vehicle registration to buy the best Storm catalytic converter online that fits your '90 Storm and meets your state’s emissions compliance.